assemblyscript/std/assembly/index.d.ts

/**
 * Environment definitions for compiling AssemblyScript to WebAssembly using asc.
 * @module std/assembly
 *//***/

/// <reference no-default-lib="true"/>

// Types

/** An 8-bit signed integer. */
declare type i8 = number;
/** A 16-bit signed integer. */
declare type i16 = number;
/** A 32-bit signed integer. */
declare type i32 = number;
/** A 64-bit signed integer. */
declare type i64 = number;
/** A 32-bit signed integer when targeting 32-bit WebAssembly or a 64-bit signed integer when targeting 64-bit WebAssembly. */
declare type isize = number;
/** An 8-bit unsigned integer. */
declare type u8 = number;
/** A 16-bit unsigned integer. */
declare type u16 = number;
/** A 32-bit unsigned integer. */
declare type u32 = number;
/** A 64-bit unsigned integer. */
declare type u64 = number;
/** A 32-bit unsigned integer when targeting 32-bit WebAssembly or a 64-bit unsigned integer when targeting 64-bit WebAssembly. */
declare type usize = number;
/** A 1-bit unsigned integer. */
declare type bool = boolean | number;
/** A 32-bit float. */
declare type f32 = number;
/** A 64-bit float. */
declare type f64 = number;
/** A 128-bit vector. */
declare type v128 = object;

// Compiler hints

/** Compiler target. 0 = JS, 1 = WASM32, 2 = WASM64. */
declare const ASC_TARGET: i32;
/** Provided noAssert option. */
declare const ASC_NO_ASSERT: bool;
/** Provided memoryBase option. */
declare const ASC_MEMORY_BASE: i32;
/** Provided optimizeLevel option. */
declare const ASC_OPTIMIZE_LEVEL: i32;
/** Provided shrinkLevel option. */
declare const ASC_SHRINK_LEVEL: i32;
/** Whether the mutable global feature is enabled. */
declare const ASC_FEATURE_MUTABLE_GLOBAL: bool;
/** Whether the sign extension feature is enabled. */
declare const ASC_FEATURE_SIGN_EXTENSION: bool;
/** Whether the bulk memory feature is enabled. */
declare const ASC_FEATURE_BULK_MEMORY: bool;
/** Whether the SIMD feature is enabled. */
declare const ASC_FEATURE_SIMD: bool;
/** Whether the threads feature is enabled. */
declare const ASC_FEATURE_THREADS: bool;

// Builtins

/** Performs the sign-agnostic count leading zero bits operation on a 32-bit or 64-bit integer. All zero bits are considered leading if the value is zero. */
declare function clz<T = i32 | i64>(value: T): T;
/** Performs the sign-agnostic count tailing zero bits operation on a 32-bit or 64-bit integer. All zero bits are considered trailing if the value is zero. */
declare function ctz<T = i32 | i64>(value: T): T;
/** Performs the sign-agnostic count number of one bits operation on a 32-bit or 64-bit integer. */
declare function popcnt<T = i32 | i64>(value: T): T;
/** Performs the sign-agnostic rotate left operation on a 32-bit or 64-bit integer. */
declare function rotl<T = i32 | i64>(value: T, shift: T): T;
/** Performs the sign-agnostic rotate right operation on a 32-bit or 64-bit integer. */
declare function rotr<T = i32 | i64>(value: T, shift: T): T;
/** Computes the absolute value of an integer or float. */
declare function abs<T = i32 | i64 | f32 | f64>(value: T): T;
/** Determines the maximum of two integers or floats. If either operand is `NaN`, returns `NaN`. */
declare function max<T = i32 | i64 | f32 | f64>(left: T, right: T): T;
/** Determines the minimum of two integers or floats. If either operand is `NaN`, returns `NaN`. */
declare function min<T = i32 | i64 | f32 | f64>(left: T, right: T): T;
/** Performs the ceiling operation on a 32-bit or 64-bit float. */
declare function ceil<T = f32 | f64>(value: T): T;
/** Composes a 32-bit or 64-bit float from the magnitude of `x` and the sign of `y`. */
declare function copysign<T = f32 | f64>(x: T, y: T): T;
/** Performs the floor operation on a 32-bit or 64-bit float. */
declare function floor<T = f32 | f64>(value: T): T;
/** Rounds to the nearest integer tied to even of a 32-bit or 64-bit float. */
declare function nearest<T = f32 | f64>(value: T): T;
/** Reinterprets the bits of the specified value as type `T`. Valid reinterpretations are u32/i32 to/from f32 and u64/i64 to/from f64. */
declare function reinterpret<T = i32 | i64 | f32 | f64>(value: number): T;
/** Selects one of two pre-evaluated values depending on the condition. */
declare function select<T>(ifTrue: T, ifFalse: T, condition: bool): T;
/** Calculates the square root of a 32-bit or 64-bit float. */
declare function sqrt<T = f32 | f64>(value: T): T;
/** Rounds to the nearest integer towards zero of a 32-bit or 64-bit float. */
declare function trunc<T = f32 | f64>(value: T): T;
/** Loads a value of the specified type from memory. Equivalent to dereferncing a pointer in other languages. */
declare function load<T>(ptr: usize, immOffset?: usize, immAlign?: usize): T;
/** Stores a value of the specified type to memory. Equivalent to dereferencing a pointer in other languages when assigning a value. */
declare function store<T>(ptr: usize, value: any, immOffset?: usize, immAlign?: usize): void;
/** Emits an unreachable operation that results in a runtime error when executed. Both a statement and an expression of any type. */
declare function unreachable(): any; // sic

/** NaN (not a number) as a 32-bit or 64-bit float depending on context. */
declare const NaN: f32 | f64;
/** Positive infinity as a 32-bit or 64-bit float depending on context. */
declare const Infinity: f32 | f64;
/** Heap base offset. */
declare const HEAP_BASE: usize;
/** Determines the byte size of the specified underlying core type. Compiles to a constant. */
declare function sizeof<T>(): usize;
/** Determines the alignment (log2) of the specified underlying core type. Compiles to a constant. */
declare function alignof<T>(): usize;
/** Determines the offset of the specified field within the given class type. Returns the class type's end offset if field name has been omitted. Compiles to a constant. */
declare function offsetof<T>(fieldName?: string): usize;
/** Changes the type of any value of `usize` kind to another one of `usize` kind. Useful for casting class instances to their pointer values and vice-versa. Beware that this is unsafe.*/
declare function changetype<T>(value: any): T;
/** Explicitly requests no bounds checks on the provided expression. Useful for array accesses. */
declare function unchecked<T>(value: T): T;
/** Emits a `call_indirect` instruction, calling the specified function in the function table by index with the specified arguments. Does result in a runtime error if the arguments do not match the called function. */
declare function call_indirect<T>(target: Function | u32, ...args: any[]): T;
/** Instantiates a new instance of `T` using the specified constructor arguments. */
declare function instantiate<T>(...args: any[]): T;
/** Tests if a 32-bit or 64-bit float is `NaN`. */
declare function isNaN<T = f32 | f64>(value: T): bool;
/** Tests if a 32-bit or 64-bit float is finite, that is not `NaN` or +/-`Infinity`. */
declare function isFinite<T = f32 | f64>(value: T): bool;
/** Tests if the specified type *or* expression is of an integer type and not a reference. Compiles to a constant. */
declare function isInteger<T>(value?: any): value is number;
/** Tests if the specified type *or* expression is of a float type. Compiles to a constant. */
declare function isFloat<T>(value?: any): value is number;
/** Tests if the specified type *or* expression can represent negative numbers. Compiles to a constant. */
declare function isSigned<T>(value?: any): value is number;
/** Tests if the specified type *or* expression is of a reference type. Compiles to a constant. */
declare function isReference<T>(value?: any): value is object | string;
/** Tests if the specified type *or* expression can be used as a string. Compiles to a constant. */
declare function isString<T>(value?: any): value is string | String;
/** Tests if the specified type *or* expression can be used as an array. Compiles to a constant. */
declare function isArray<T>(value?: any): value is Array<any>;
/** Tests if the specified type *or* expression can be used as an array like object. Compiles to a constant. */
declare function isArrayLike<T>(value?: any): value is ArrayLike<any>;
/** Tests if the specified type *or* expression is of a function type. Compiles to a constant. */
declare function isFunction<T>(value?: any): value is (...args: any) => any;
/** Tests if the specified type *or* expression is of a nullable reference type. Compiles to a constant. */
declare function isNullable<T>(value?: any): bool;
/** Tests if the specified expression resolves to a defined element. Compiles to a constant. */
declare function isDefined(expression: any): bool;
/** Tests if the specified expression evaluates to a constant value. Compiles to a constant. */
declare function isConstant(expression: any): bool;
/** Tests if the specified type *or* expression is of a managed type. Compiles to a constant. */
declare function isManaged<T>(value?: any): bool;
/** Traps if the specified value is not true-ish, otherwise returns the (non-nullable) value. */
declare function assert<T>(isTrueish: T, message?: string): T & object; // any better way to model `: T != null`?
/** Parses an integer string to a 64-bit float. */
declare function parseInt(str: string, radix?: i32): f64;
/** Parses an integer string to a 32-bit integer. */
declare function parseI32(str: string, radix?: i32): i32;
/** Parses an integer string to a 64-bit integer. */
declare function parseI64(str: string, radix?: i32): i64;
/** Parses a string to a 64-bit float. */
declare function parseFloat(str: string): f64;
/** Returns the 64-bit floating-point remainder of `x/y`. */
declare function fmod(x: f64, y: f64): f64;
/** Returns the 32-bit floating-point remainder of `x/y`. */
declare function fmodf(x: f32, y: f32): f32;

/** Atomic operations. */
declare namespace atomic {
  /** Atomically loads an integer value from memory and returns it. */
  export function load<T>(offset: usize, immOffset?: usize): T;
  /** Atomically stores an integer value to memory. */
  export function store<T>(offset: usize, value: T, immOffset?: usize): void;
  /** Atomically adds an integer value in memory. */
  export function add<T>(ptr: usize, value: T, immOffset?: usize): T;
  /** Atomically subtracts an integer value in memory. */
  export function sub<T>(ptr: usize, value: T, immOffset?: usize): T;
  /** Atomically performs a bitwise AND operation on an integer value in memory. */
  export function and<T>(ptr: usize, value: T, immOffset?: usize): T;
  /** Atomically performs a bitwise OR operation on an integer value in memory. */
  export function or<T>(ptr: usize, value: T, immOffset?: usize): T;
  /** Atomically performs a bitwise XOR operation on an integer value in memory. */
  export function xor<T>(ptr: usize, value: T, immOffset?: usize): T;
  /** Atomically exchanges an integer value in memory. */
  export function xchg<T>(ptr: usize, value: T, immOffset?: usize): T;
  /** Atomically compares and exchanges an integer value in memory if the condition is met. */
  export function cmpxchg<T>(ptr: usize, expected: T, replacement: T, immOffset?: usize): T;
  /** Performs a wait operation on an integer value in memory suspending this agent if the condition is met. */
  export function wait<T>(ptr: usize, expected: T, timeout: i64): AtomicWaitResult;
  /** Performs a notify operation on an integer value in memory waking up suspended agents. */
  export function notify<T>(ptr: usize, count: i32): i32;
}

/** Describes the result of an atomic wait operation. */
declare enum AtomicWaitResult {
  /** Woken by another agent. */
  OK,
  /** Loaded value did not match the expected value. */
  NOT_EQUAL,
  /** Not woken before the timeout expired. */
  TIMED_OUT
}

/** Converts any other numeric value to an 8-bit signed integer. */
declare function i8(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): i8;
declare namespace i8 {
  /** Smallest representable value. */
  export const MIN_VALUE: i8;
  /** Largest representable value. */
  export const MAX_VALUE: i8;
}
/** Converts any other numeric value to a 16-bit signed integer. */
declare function i16(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): i8;
declare namespace i16 {
  /** Smallest representable value. */
  export const MIN_VALUE: i16;
  /** Largest representable value. */
  export const MAX_VALUE: i16;
}
/** Converts any other numeric value to a 32-bit signed integer. */
declare function i32(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): i32;
declare namespace i32 {
  /** Smallest representable value. */
  export const MIN_VALUE: i32;
  /** Largest representable value. */
  export const MAX_VALUE: i32;
  /** Loads an 8-bit signed integer value from memory and returns it as a 32-bit integer. */
  export function load8_s(offset: usize, immOffset?: usize, immAlign?: usize): i32;
  /** Loads an 8-bit unsigned integer value from memory and returns it as a 32-bit integer. */
  export function load8_u(offset: usize, immOffset?: usize, immAlign?: usize): i32;
  /** Loads a 16-bit signed integer value from memory and returns it as a 32-bit integer. */
  export function load16_s(offset: usize, immOffset?: usize, immAlign?: usize): i32;
  /** Loads a 16-bit unsigned integer value from memory and returns it as a 32-bit integer. */
  export function load16_u(offset: usize, immOffset?: usize, immAlign?: usize): i32;
  /** Loads a 32-bit integer value from memory. */
  export function load(offset: usize, immOffset?: usize, immAlign?: usize): i32;
  /** Stores a 32-bit integer value to memory as an 8-bit integer. */
  export function store8(offset: usize, value: i32, immOffset?: usize, immAlign?: usize): void;
  /** Stores a 32-bit integer value to memory as a 16-bit integer. */
  export function store16(offset: usize, value: i32, immOffset?: usize, immAlign?: usize): void;
  /** Stores a 32-bit integer value to memory. */
  export function store(offset: usize, value: i32, immOffset?: usize, immAlign?: usize): void;
  /** Atomic 32-bit integer operations. */
  export namespace atomic {
    /** Atomically loads an 8-bit unsigned integer value from memory and returns it as a 32-bit integer. */
    export function load8_u(offset: usize, immOffset?: usize): i32;
    /** Atomically loads a 16-bit unsigned integer value from memory and returns it as a 32-bit integer. */
    export function load16_u(offset: usize, immOffset?: usize): i32;
    /** Atomically loads a 32-bit integer value from memory and returns it. */
    export function load(offset: usize, immOffset?: usize): i32;
    /** Atomically stores a 32-bit integer value to memory as an 8-bit integer. */
    export function store8(offset: usize, value: i32, immOffset?: usize): void;
    /** Atomically stores a 32-bit integer value to memory as a 16-bit integer. */
    export function store16(offset: usize, value: i32, immOffset?: usize): void;
    /** Atomically stores a 32-bit integer value to memory. */
    export function store(offset: usize, value: i32, immOffset?: usize): void;
    /** Performs a wait operation on a 32-bit integer value in memory suspending this agent if the condition is met. */
    export function wait(ptr: usize, expected: i32, timeout: i64): AtomicWaitResult;
    /** Performs a notify operation on a 32-bit integer value in memory waking up suspended agents. */
    export function notify(ptr: usize, count: i32): i32;
    /** Atomic 32-bit integer read-modify-write operations on 8-bit values. */
    export namespace rmw8 {
      /** Atomically adds an 8-bit unsigned integer value in memory. */
      export function add_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically subtracts an 8-bit unsigned integer value in memory. */
      export function sub_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise AND operation an 8-bit unsigned integer value in memory. */
      export function and_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise OR operation an 8-bit unsigned integer value in memory. */
      export function or_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise XOR operation an 8-bit unsigned integer value in memory. */
      export function xor_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically exchanges an 8-bit unsigned integer value in memory. */
      export function xchg_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically compares and exchanges an 8-bit unsigned integer value in memory if the condition is met. */
      export function cmpxchg_u(offset: usize, expected: i32, replacement: i32, immOffset?: usize): i32;
    }
    /** Atomic 32-bit integer read-modify-write operations on 16-bit values. */
    export namespace rmw16 {
      /** Atomically adds a 16-bit unsigned integer value in memory. */
      export function add_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically adds a 16-bit unsigned integer value in memory. */
      export function sub_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise AND operation a 16-bit unsigned integer value in memory. */
      export function and_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise OR operation a 16-bit unsigned integer value in memory. */
      export function or_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise XOR operation a 16-bit unsigned integer value in memory. */
      export function xor_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically exchanges a 16-bit unsigned integer value in memory. */
      export function xchg_u(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically compares and exchanges a 16-bit unsigned integer value in memory if the condition is met. */
      export function cmpxchg_u(offset: usize, expected: i32, replacement: i32, immOffset?: usize): i32;
    }
    /** Atomic 32-bit integer read-modify-write operations. */
    export namespace rmw {
      /** Atomically adds a 32-bit integer value in memory. */
      export function add(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically subtracts a 32-bit integer value in memory. */
      export function sub(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise AND operation a 32-bit integer value in memory. */
      export function and(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise OR operation a 32-bit integer value in memory. */
      export function or(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically performs a bitwise XOR operation a 32-bit integer value in memory. */
      export function xor(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically exchanges a 32-bit integer value in memory. */
      export function xchg(offset: usize, value: i32, immOffset?: usize): i32;
      /** Atomically compares and exchanges a 32-bit integer value in memory if the condition is met. */
      export function cmpxchg(offset: usize, expected: i32, replacement: i32, immOffset?: usize): i32;
    }
  }
}
/** Converts any other numeric value to a 64-bit signed integer. */
declare function i64(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): i64;
declare namespace i64 {
  /** Smallest representable value. */
  export const MIN_VALUE: i64;
  /** Largest representable value. */
  export const MAX_VALUE: i64;
  /** Loads an 8-bit signed integer value from memory and returns it as a 64-bit integer. */
  export function load8_s(offset: usize, immOffset?: usize, immAlign?: usize): i64;
  /** Loads an 8-bit unsigned integer value from memory and returns it as a 64-bit integer. */
  export function load8_u(offset: usize, immOffset?: usize, immAlign?: usize): i64;
  /** Loads a 16-bit signed integer value from memory and returns it as a 64-bit integer. */
  export function load16_s(offset: usize, immOffset?: usize, immAlign?: usize): i64;
  /** Loads a 16-bit unsigned integer value from memory and returns it as a 64-bit integer. */
  export function load16_u(offset: usize, immOffset?: usize, immAlign?: usize): i64;
  /** Loads a 32-bit signed integer value from memory and returns it as a 64-bit integer. */
  export function load32_s(offset: usize, immOffset?: usize, immAlign?: usize): i64;
  /** Loads a 32-bit unsigned integer value from memory and returns it as a 64-bit integer. */
  export function load32_u(offset: usize, immOffset?: usize, immAlign?: usize): i64;
  /** Loads a 64-bit unsigned integer value from memory. */
  export function load(offset: usize, immOffset?: usize, immAlign?: usize): i64;
  /** Stores a 64-bit integer value to memory as an 8-bit integer. */
  export function store8(offset: usize, value: i64, immOffset?: usize, immAlign?: usize): void;
  /** Stores a 64-bit integer value to memory as a 16-bit integer. */
  export function store16(offset: usize, value: i64, immOffset?: usize, immAlign?: usize): void;
  /** Stores a 64-bit integer value to memory as a 32-bit integer. */
  export function store32(offset: usize, value: i64, immOffset?: usize, immAlign?: usize): void;
  /** Stores a 64-bit integer value to memory. */
  export function store(offset: usize, value: i64, immOffset?: usize, immAlign?: usize): void;
  /** Atomic 64-bit integer operations. */
  export namespace atomic {
    /** Atomically loads an 8-bit unsigned integer value from memory and returns it as a 64-bit integer. */
    export function load8_u(offset: usize, immOffset?: usize): i64;
    /** Atomically loads a 16-bit unsigned integer value from memory and returns it as a 64-bit integer. */
    export function load16_u(offset: usize, immOffset?: usize): i64;
    /** Atomically loads a 32-bit unsigned integer value from memory and returns it as a 64-bit integer. */
    export function load32_u(offset: usize, immOffset?: usize): i64;
    /** Atomically loads a 64-bit integer value from memory and returns it. */
    export function load(offset: usize, immOffset?: usize): i64;
    /** Atomically stores a 64-bit integer value to memory as an 8-bit integer. */
    export function store8(offset: usize, value: i64, immOffset?: usize): void;
    /** Atomically stores a 64-bit integer value to memory as a 16-bit integer. */
    export function store16(offset: usize, value: i64, immOffset?: usize): void;
    /** Atomically stores a 64-bit integer value to memory as a 32-bit integer. */
    export function store32(offset: usize, value: i64, immOffset?: usize): void;
    /** Atomically stores a 64-bit integer value to memory. */
    export function store(offset: usize, value: i64, immOffset?: usize): void;
    /** Performs a wait operation on a 64-bit integer value in memory suspending this agent if the condition is met. */
    export function wait(ptr: usize, expected: i64, timeout: i64): AtomicWaitResult;
    /** Performs a notify operation on a 64-bit integer value in memory waking up suspended agents. */
    export function notify(ptr: usize, count: i32): i32;
    /** Atomic 64-bit integer read-modify-write operations on 8-bit values. */
    export namespace rmw8 {
      /** Atomically adds an 8-bit unsigned integer value in memory. */
      export function add_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically subtracts an 8-bit unsigned integer value in memory. */
      export function sub_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise AND operation on an 8-bit unsigned integer value in memory. */
      export function and_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise OR operation on an 8-bit unsigned integer value in memory. */
      export function or_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise XOR operation on an 8-bit unsigned integer value in memory. */
      export function xor_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically exchanges an 8-bit unsigned integer value in memory. */
      export function xchg_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically compares and exchanges an 8-bit unsigned integer value in memory if the condition is met. */
      export function cmpxchg_u(offset: usize, expected: i64, replacement: i64, immOffset?: usize): i64;
    }
    /** Atomic 64-bit integer read-modify-write operations on 16-bit values. */
    export namespace rmw16 {
      /** Atomically adds a 16-bit unsigned integer value in memory. */
      export function add_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically subtracts a 16-bit unsigned integer value in memory. */
      export function sub_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise AND operation on a 16-bit unsigned integer value in memory. */
      export function and_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise OR operation on a 16-bit unsigned integer value in memory. */
      export function or_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise XOR operation on a 16-bit unsigned integer value in memory. */
      export function xor_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically exchanges a 16-bit unsigned integer value in memory. */
      export function xchg_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically compares and exchanges a 16-bit unsigned integer value in memory if the condition is met. */
      export function cmpxchg_u(offset: usize, expected: i64, replacement: i64, immOffset?: usize): i64;
    }
    /** Atomic 64-bit integer read-modify-write operations on 32-bit values. */
    export namespace rmw32 {
      /** Atomically adds a 32-bit unsigned integer value in memory. */
      export function add_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically subtracts a 32-bit unsigned integer value in memory. */
      export function sub_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise AND operation on a 32-bit unsigned integer value in memory. */
      export function and_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise OR operation on a 32-bit unsigned integer value in memory. */
      export function or_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise XOR operation on a 32-bit unsigned integer value in memory. */
      export function xor_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically exchanges a 32-bit unsigned integer value in memory. */
      export function xchg_u(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically compares and exchanges a 32-bit unsigned integer value in memory if the condition is met. */
      export function cmpxchg_u(offset: usize, expected: i64, replacement: i64, immOffset?: usize): i64;
    }
    /** Atomic 64-bit integer read-modify-write operations. */
    export namespace rmw {
      /** Atomically adds a 64-bit integer value in memory. */
      export function add(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically subtracts a 64-bit integer value in memory. */
      export function sub(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise AND operation on a 64-bit integer value in memory. */
      export function and(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise OR operation on a 64-bit integer value in memory. */
      export function or(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically performs a bitwise XOR operation on a 64-bit integer value in memory. */
      export function xor(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically exchanges a 64-bit integer value in memory. */
      export function xchg(offset: usize, value: i64, immOffset?: usize): i64;
      /** Atomically compares and exchanges a 64-bit integer value in memory if the condition is met. */
      export function cmpxchg(offset: usize, expected: i64, replacement: i64, immOffset?: usize): i64;
    }
  }
}
/** Converts any other numeric value to a 32-bit (in WASM32) respectivel 64-bit (in WASM64) signed integer. */
declare var isize: typeof i32 | typeof i64;
/** Converts any other numeric value to an 8-bit unsigned integer. */
declare function u8(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): i8;
declare namespace u8 {
  /** Smallest representable value. */
  export const MIN_VALUE: u8;
  /** Largest representable value. */
  export const MAX_VALUE: u8;
}
/** Converts any other numeric value to a 16-bit unsigned integer. */
declare function u16(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): i8;
declare namespace u16 {
  /** Smallest representable value. */
  export const MIN_VALUE: u16;
  /** Largest representable value. */
  export const MAX_VALUE: u16;
}
/** Converts any other numeric value to a 32-bit unsigned integer. */
declare function u32(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): i32;
declare namespace u32 {
  /** Smallest representable value. */
  export const MIN_VALUE: u32;
  /** Largest representable value. */
  export const MAX_VALUE: u32;
}
/** Converts any other numeric value to a 64-bit unsigned integer. */
declare function u64(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): i64;
declare namespace u64 {
  /** Smallest representable value. */
  export const MIN_VALUE: u64;
  /** Largest representable value. */
  export const MAX_VALUE: u64;
}
/** Converts any other numeric value to a 32-bit (in WASM32) respectivel 64-bit (in WASM64) unsigned integer. */
declare var usize: typeof u32 | typeof u64;
/** Converts any other numeric value to a 1-bit unsigned integer. */
declare function bool(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): bool;
declare namespace bool {
  /** Smallest representable value. */
  export const MIN_VALUE: bool;
  /** Largest representable value. */
  export const MAX_VALUE: bool;
}
/** Converts any other numeric value to a 32-bit float. */
declare function f32(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): f32;
declare namespace f32 {
  /** Smallest representable value. */
  export const MIN_VALUE: f32;
  /** Largest representable value. */
  export const MAX_VALUE: f32;
  /** Smallest normalized positive value. */
  export const MIN_POSITIVE_VALUE: f32;
  /** Smallest safely representable integer value. */
  export const MIN_SAFE_INTEGER: f32;
  /** Largest safely representable integer value. */
  export const MAX_SAFE_INTEGER: f32;
  /** Difference between 1 and the smallest representable value greater than 1. */
  export const EPSILON: f32;
  /** Loads a 32-bit float from memory. */
  export function load(offset: usize, immOffset?: usize, immAlign?: usize): f32;
  /** Stores a 32-bit float to memory. */
  export function store(offset: usize, value: f32, immOffset?: usize, immAlign?: usize): void;
}
/** Converts any other numeric value to a 64-bit float. */
declare function f64(value: i8 | i16 | i32 | i64 | isize | u8 | u16 | u32 | u64 | usize | bool | f32 | f64): f64;
declare namespace f64 {
  /** Smallest representable value. */
  export const MIN_VALUE: f64;
  /** Largest representable value. */
  export const MAX_VALUE: f64;
  /** Smallest normalized positive value. */
  export const MIN_POSITIVE_VALUE: f64;
  /** Smallest safely representable integer value. */
  export const MIN_SAFE_INTEGER: f64;
  /** Largest safely representable integer value. */
  export const MAX_SAFE_INTEGER: f64;
  /** Difference between 1 and the smallest representable value greater than 1. */
  export const EPSILON: f64;
  /** Loads a 64-bit float from memory. */
  export function load(offset: usize, immOffset?: usize, immAlign?: usize): f64;
  /** Stores a 64-bit float to memory. */
  export function store(offset: usize, value: f64, immOffset?: usize, immAlign?: usize): void;
}
/** Initializes a 128-bit vector from sixteen 8-bit integer values. Arguments must be compile-time constants. */
declare function v128(a: i8, b: i8, c: i8, d: i8, e: i8, f: i8, g: i8, h: i8, i: i8, j: i8, k: i8, l: i8, m: i8, n: i8, o: i8, p: i8): v128;
declare namespace v128 {
  /** Creates a 128-bit vector with identical lanes. */
  export function splat<T>(x: T): v128;
  /** Extracts one lane from a 128-bit vector as a scalar. */
  export function extract_lane<T>(x: v128, idx: u8): T;
  /** Replaces one lane in a 128-bit vector. */
  export function replace_lane<T>(x: v128, idx: u8, value: T): v128;
  /** Selects lanes from either 128-bit vector according to the specified lane indexes. */
  export function shuffle<T>(a: v128, b: v128, ...lanes: u8[]): v128;
  /** Loads a 128-bit vector from memory. */
  export function load(offset: usize, immOffset?: usize, immAlign?: usize): v128;
  /** Stores a 128-bit vector to memory. */
  export function store(offset: usize, value: v128, immOffset?: usize, immAlign?: usize): void;
  /** Adds each lane of two 128-bit vectors. */
  export function add<T>(a: v128, b: v128): v128;
  /** Subtracts each lane of two 128-bit vectors. */
  export function sub<T>(a: v128, b: v128): v128;
  /** Multiplies each lane of two 128-bit vectors. */
  export function mul<T>(a: v128, b: v128): v128; // except i64
  /** Divides each lane of two 128-bit vectors. */
  export function div<T = f32 | f64>(a: v128, b: v128): v128;
  /** Negates each lane of a 128-bit vector */
  export function neg<T>(a: v128): v128;
  /** Adds each lane of two 128-bit vectors using saturation. */
  export function add_saturate<T>(a: v128, b: v128): v128;
  /** Subtracts each lane of two 128-bit vectors using saturation. */
  export function sub_saturate<T>(a: v128, b: v128): v128;
  /** Performs a bitwise left shift on each lane of a 128-bit vector by a scalar. */
  export function shl<T>(a: v128, b: i32): v128;
  /** Performs a bitwise right shift on each lane of a 128-bit vector by a scalar. */
  export function shr<T>(a: v128, b: i32): v128;
  /** Performs the bitwise AND operation on each lane of two 128-bit vectors. */
  export function and(a: v128, b: v128): v128;
  /** Performs the bitwise OR operation on each lane of two 128-bit vectors. */
  export function or(a: v128, b: v128): v128;
  /** Performs the bitwise XOR operation on each lane of two 128-bit vectors. */
  export function xor(a: v128, b: v128): v128;
  /** Performs the bitwise NOT operation on each lane of a 128-bit vector. */
  export function not(a: v128): v128;
  /** Selects bits of either 128-bit vector according to the specified mask. */
  export function bitselect(v1: v128, v2: v128, mask: v128): v128;
  /** Reduces a 128-bit vector to a scalar indicating whether any lane is considered `true`. */
  export function any_true<T>(a: v128): bool;
  /** Reduces a 128-bit vector to a scalar indicating whether all lanes are considered `true`. */
  export function all_true<T>(a: v128): bool;
  /** Computes the minimum of each lane of two 128-bit vectors. */
  export function min<T = f32 | f64>(a: v128, b: v128): v128;
  /** Computes the maximum of each lane of two 128-bit vectors. */
  export function max<T = f32 | f64>(a: v128, b: v128): v128;
  /** Computes the absolute value of each lane of a 128-bit vector. */
  export function abs<T = f32 | f64>(a: v128): v128;
  /** Computes the square root of each lane of a 128-bit vector. */
  export function sqrt<T = f32 | f64>(a: v128): v128;
  /** Computes which lanes of two 128-bit vectors are equal. */
  export function eq<T>(a: v128, b: v128): v128;
  /** Computes which lanes of two 128-bit vectors are not equal. */
  export function ne<T>(a: v128, b: v128): v128;
  /** Computes which lanes of the first 128-bit vector are less than those of the second. */
  export function lt<T>(a: v128, b: v128): v128;
  /** Computes which lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le<T>(a: v128, b: v128): v128;
  /** Computes which lanes of the first 128-bit vector are greater than those of the second. */
  export function gt<T>(a: v128, b: v128): v128;
  /** Computes which lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge<T>(a: v128, b: v128): v128;
  /** Converts each lane of a 128-bit vector from integer to floating point. */
  export function convert<TFrom = i32 | u32 | i64 | u64>(a: v128): v128;
  /** Truncates each lane of a 128-bit vector from floating point to integer with saturation. */
  export function trunc<TTo = i32 | u32 | i64 | u64>(a: v128): v128;
}
/** Initializes a 128-bit vector from sixteen 8-bit integer values. Arguments must be compile-time constants. */
declare function i8x16(a: i8, b: i8, c: i8, d: i8, e: i8, f: i8, g: i8, h: i8, i: i8, j: i8, k: i8, l: i8, m: i8, n: i8, o: i8, p: i8): v128;
declare namespace i8x16 {
  /** Creates a vector with sixteen identical 8-bit integer lanes. */
  export function splat(x: i8): v128;
  /** Extracts one 8-bit integer lane from a 128-bit vector as a signed scalar. */
  export function extract_lane_s(x: v128, idx: u8): i8;
  /** Extracts one 8-bit integer lane from a 128-bit vector as an unsigned scalar. */
  export function extract_lane_u(x: v128, idx: u8): u8;
  /** Replaces one 8-bit integer lane in a 128-bit vector. */
  export function replace_lane(x: v128, idx: u8, value: i8): v128;
  /** Adds each 8-bit integer lane of two 128-bit vectors. */
  export function add(a: v128, b: v128): v128;
  /** Subtracts each 8-bit integer lane of two 128-bit vectors. */
  export function sub(a: v128, b: v128): v128;
  /** Multiplies each 8-bit integer lane of two 128-bit vectors. */
  export function mul(a: v128, b: v128): v128;
  /** Negates each 8-bit integer lane of a 128-bit vector. */
  export function neg(a: v128): v128;
  /** Adds each 8-bit integer lane of two 128-bit vectors using signed saturation. */
  export function add_saturate_s(a: v128, b: v128): v128;
  /** Adds each 8-bit integer lane of two 128-bit vectors using unsigned saturation. */
  export function add_saturate_u(a: v128, b: v128): v128;
  /** Subtracts each 8-bit integer lane of two 128-bit vectors using signed saturation. */
  export function sub_saturate_s(a: v128, b: v128): v128;
  /** Subtracts each 8-bit integer lane of two 128-bit vectors using unsigned saturation. */
  export function sub_saturate_u(a: v128, b: v128): v128;
  /** Performs a bitwise left shift on each 8-bit integer lane of a 128-bit vector by a scalar. */
  export function shl(a: v128, b: i32): v128;
  /** Performs a bitwise arithmetic right shift on each 8-bit integer lane of a 128-bit vector by a scalar. */
  export function shr_s(a: v128, b: i32): v128;
  /** Performs a bitwise logical right shift on each 8-bit integer lane of a 128-bit vector by a scalar. */
  export function shr_u(a: v128, b: i32): v128;
  /** Reduces a 128-bit vector to a scalar indicating whether any 8-bit integer lane is considered `true`. */
  export function any_true(a: v128): bool;
  /** Reduces a 128-bit vector to a scalar indicating whether all 8-bit integer lanes are considered `true`. */
  export function all_true(a: v128): bool;
  /** Computes which 8-bit integer lanes of two 128-bit vectors are equal. */
  export function eq(a: v128, b: v128): v128;
  /** Computes which 8-bit integer lanes of two 128-bit vectors are not equal. */
  export function ne(a: v128, b: v128): v128;
  /** Computes which 8-bit signed integer lanes of the first 128-bit vector are less than those of the second. */
  export function lt_s(a: v128, b: v128): v128;
  /** Computes which 8-bit unsigned integer lanes of the first 128-bit vector are less than those of the second. */
  export function lt_u(a: v128, b: v128): v128;
  /** Computes which 8-bit signed integer lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le_s(a: v128, b: v128): v128;
  /** Computes which 8-bit unsigned integer lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le_u(a: v128, b: v128): v128;
  /** Computes which 8-bit signed integer lanes of the first 128-bit vector are greater than those of the second. */
  export function gt_s(a: v128, b: v128): v128;
  /** Computes which 8-bit unsigned integer lanes of the first 128-bit vector are greater than those of the second. */
  export function gt_u(a: v128, b: v128): v128;
  /** Computes which 8-bit signed integer lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge_s(a: v128, b: v128): v128;
  /** Computes which 8-bit unsigned integer lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge_u(a: v128, b: v128): v128;
}
/** Initializes a 128-bit vector from eight 16-bit integer values. Arguments must be compile-time constants. */
declare function i16x8(a: i16, b: i16, c: i16, d: i16, e: i16, f: i16, g: i16, h: i16): v128;
declare namespace i16x8 {
  /** Creates a vector with eight identical 16-bit integer lanes. */
  export function splat(x: i16): v128;
  /** Extracts one 16-bit integer lane from a 128-bit vector as a signed scalar. */
  export function extract_lane_s(x: v128, idx: u8): i16;
  /** Extracts one 16-bit integer lane from a 128-bit vector as an unsigned scalar. */
  export function extract_lane_u(x: v128, idx: u8): u16;
  /** Replaces one 16-bit integer lane in a 128-bit vector. */
  export function replace_lane(x: v128, idx: u8, value: i16): v128;
  /** Adds each 16-bit integer lane of two 128-bit vectors. */
  export function add(a: v128, b: v128): v128;
  /** Subtracts each 16-bit integer lane of two 128-bit vectors. */
  export function sub(a: v128, b: v128): v128;
  /** Multiplies each 16-bit integer lane of two 128-bit vectors. */
  export function mul(a: v128, b: v128): v128;
  /** Negates each 16-bit integer lane of a 128-bit vector. */
  export function neg(a: v128): v128;
  /** Adds each 16-bit integer lane of two 128-bit vectors using signed saturation. */
  export function add_saturate_s(a: v128, b: v128): v128;
  /** Adds each 16-bit integer lane of two 128-bit vectors using unsigned saturation. */
  export function add_saturate_u(a: v128, b: v128): v128;
  /** Subtracts each 16-bit integer lane of two 128-bit vectors using signed saturation. */
  export function sub_saturate_s(a: v128, b: v128): v128;
  /** Subtracts each 16-bit integer lane of two 128-bit vectors using unsigned saturation. */
  export function sub_saturate_u(a: v128, b: v128): v128;
  /** Performs a bitwise left shift on each 16-bit integer lane of a 128-bit vector by a scalar. */
  export function shl(a: v128, b: i32): v128;
  /** Performs a bitwise arithmetic right shift each 16-bit integer lane of a 128-bit vector by a scalar. */
  export function shr_s(a: v128, b: i32): v128;
  /** Performs a bitwise logical right shift on each 16-bit integer lane of a 128-bit vector by a scalar. */
  export function shr_u(a: v128, b: i32): v128;
  /** Reduces a 128-bit vector to a scalar indicating whether any 16-bit integer lane is considered `true`. */
  export function any_true(a: v128): bool;
  /** Reduces a 128-bit vector to a scalar indicating whether all 16-bit integer lanes are considered `true`. */
  export function all_true(a: v128): bool;
  /** Computes which 16-bit integer lanes of two 128-bit vectors are equal. */
  export function eq(a: v128, b: v128): v128;
  /** Computes which 16-bit integer lanes of two 128-bit vectors are not equal. */
  export function ne(a: v128, b: v128): v128;
  /** Computes which 16-bit signed integer lanes of the first 128-bit vector are less than those of the second. */
  export function lt_s(a: v128, b: v128): v128;
  /** Computes which 16-bit unsigned integer lanes of the first 128-bit vector are less than those of the second. */
  export function lt_u(a: v128, b: v128): v128;
  /** Computes which 16-bit signed integer lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le_s(a: v128, b: v128): v128;
  /** Computes which 16-bit unsigned integer lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le_u(a: v128, b: v128): v128;
  /** Computes which 16-bit signed integer lanes of the first 128-bit vector are greater than those of the second. */
  export function gt_s(a: v128, b: v128): v128;
  /** Computes which 16-bit unsigned integer lanes of the first 128-bit vector are greater than those of the second. */
  export function gt_u(a: v128, b: v128): v128;
  /** Computes which 16-bit signed integer lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge_s(a: v128, b: v128): v128;
  /** Computes which 16-bit unsigned integer lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge_u(a: v128, b: v128): v128;
}
/** Initializes a 128-bit vector from four 32-bit integer values. Arguments must be compile-time constants. */
declare function i32x4(a: i32, b: i32, c: i32, d: i32): v128;
declare namespace i32x4 {
  /** Creates a 128-bit vector with four identical 32-bit integer lanes. */
  export function splat(x: i32): v128;
  /** Extracts one 32-bit integer lane from a 128-bit vector as a scalar. */
  export function extract_lane(x: v128, idx: u8): i32;
  /** Replaces one 32-bit integer lane in a 128-bit vector. */
  export function replace_lane(x: v128, idx: u8, value: i32): v128;
  /** Adds each 32-bit integer lane of two 128-bit vectors. */
  export function add(a: v128, b: v128): v128;
  /** Subtracts each 32-bit integer lane of two 128-bit vectors. */
  export function sub(a: v128, b: v128): v128;
  /** Multiplies each 32-bit integer lane of two 128-bit vectors. */
  export function mul(a: v128, b: v128): v128;
  /** Negates each 32-bit integer lane of a 128-bit vector. */
  export function neg(a: v128): v128;
  /** Performs a bitwise left shift on each 32-bit integer lane of a 128-bit vector by a scalar. */
  export function shl(a: v128, b: i32): v128;
  /** Performs a bitwise arithmetic right shift on each 32-bit integer lane of a 128-bit vector by a scalar. */
  export function shr_s(a: v128, b: i32): v128;
  /** Performs a bitwise logical right shift on each 32-bit integer lane of a 128-bit vector by a scalar. */
  export function shr_u(a: v128, b: i32): v128;
  /** Reduces a 128-bit vector to a scalar indicating whether any 32-bit integer lane is considered `true`. */
  export function any_true(a: v128): bool;
  /** Reduces a 128-bit vector to a scalar indicating whether all 32-bit integer lanes are considered `true`. */
  export function all_true(a: v128): bool;
  /** Computes which 32-bit integer lanes of two 128-bit vectors are equal. */
  export function eq(a: v128, b: v128): v128;
  /** Computes which 32-bit integer lanes of two 128-bit vectors are not equal. */
  export function ne(a: v128, b: v128): v128;
  /** Computes which 32-bit signed integer lanes of the first 128-bit vector are less than those of the second. */
  export function lt_s(a: v128, b: v128): v128;
  /** Computes which 32-bit unsigned integer lanes of the first 128-bit vector are less than those of the second. */
  export function lt_u(a: v128, b: v128): v128;
  /** Computes which 32-bit signed integer lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le_s(a: v128, b: v128): v128;
  /** Computes which 32-bit unsigned integer lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le_u(a: v128, b: v128): v128;
  /** Computes which 32-bit signed integer lanes of the first 128-bit vector are greater than those of the second. */
  export function gt_s(a: v128, b: v128): v128;
  /** Computes which 32-bit unsigned integer lanes of the first 128-bit vector are greater than those of the second. */
  export function gt_u(a: v128, b: v128): v128;
  /** Computes which 32-bit signed integer lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge_s(a: v128, b: v128): v128;
  /** Computes which 32-bit unsigned integer lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge_u(a: v128, b: v128): v128;
  /** Truncates each 32-bit float lane of a 128-bit vector to a signed integer with saturation. */
  export function trunc_s_f32x4_sat(a: v128): v128;
  /** Truncates each 32-bit float lane of a 128-bit vector to an unsigned integer with saturation. */
  export function trunc_u_f32x4_sat(a: v128): v128;
}
/** Initializes a 128-bit vector from two 64-bit integer values. Arguments must be compile-time constants. */
declare function i64x2(a: i64, b: i64): v128;
declare namespace i64x2 {
  /** Creates a 128-bit vector with two identical 64-bit integer lanes. */
  export function splat(x: i64): v128;
  /** Extracts one 64-bit integer lane from a 128-bit vector as a scalar. */
  export function extract_lane(x: v128, idx: u8): i64;
  /** Replaces one 64-bit integer lane in a 128-bit vector. */
  export function replace_lane(x: v128, idx: u8, value: i64): v128;
  /** Adds each 64-bit integer lane of two 128-bit vectors. */
  export function add(a: v128, b: v128): v128;
  /** Subtracts each 64-bit integer lane of two 128-bit vectors. */
  export function sub(a: v128, b: v128): v128;
  /** Multiplies each 64-bit integer lane of two 128-bit vectors. */
  export function mul(a: v128, b: v128): v128;
  /** Negates each 64-bit integer lane of a 128-bit vector. */
  export function neg(a: v128): v128;
  /** Performs a bitwise left shift on each 64-bit integer lane of a 128-bit vector by a scalar. */
  export function shl(a: v128, b: i32): v128;
  /** Performs a bitwise arithmetic right shift on each 64-bit integer lane of a 128-bit vector by a scalar. */
  export function shr_s(a: v128, b: i32): v128;
  /** Performs a bitwise logical right shift on each 64-bit integer lane of a 128-bit vector by a scalar. */
  export function shr_u(a: v128, b: i32): v128;
  /** Reduces a 128-bit vector to a scalar indicating whether any 64-bit integer lane is considered `true`. */
  export function any_true(a: v128): bool;
  /** Reduces a 128-bit vector to a scalar indicating whether all 64-bit integer lanes are considered `true`. */
  export function all_true(a: v128): bool;
  /** Truncates each 64-bit float lane of a 128-bit vector to a signed integer with saturation. */
  export function trunc_s_f64x2_sat(a: v128): v128;
  /** Truncates each 64-bit float lane of a 128-bit vector to an unsigned integer with saturation. */
  export function trunc_u_f64x2_sat(a: v128): v128;
}
/** Initializes a 128-bit vector from four 32-bit float values. Arguments must be compile-time constants. */
declare function f32x4(a: f32, b: f32, c: f32, d: f32): v128;
declare namespace f32x4 {
  /** Creates a 128-bit vector with four identical 32-bit float lanes. */
  export function splat(x: f32): v128;
  /** Extracts one 32-bit float lane from a 128-bit vector as a scalar. */
  export function extract_lane(x: v128, idx: u8): f32;
  /** Replaces one 32-bit float lane in a 128-bit vector. */
  export function replace_lane(x: v128, idx: u8, value: f32): v128;
  /** Adds each 32-bit float lane of two 128-bit vectors. */
  export function add(a: v128, b: v128): v128;
  /** Subtracts each 32-bit float lane of two 128-bit vectors. */
  export function sub(a: v128, b: v128): v128;
  /** Multiplies each 32-bit float lane of two 128-bit vectors. */
  export function mul(a: v128, b: v128): v128;
  /** Divides each 32-bit float lane of two 128-bit vectors. */
  export function div(a: v128, b: v128): v128;
  /** Negates each 32-bit float lane of a 128-bit vector. */
  export function neg(a: v128): v128;
  /** Computes the minimum of each 32-bit float lane of two 128-bit vectors. */
  export function min(a: v128, b: v128): v128;
  /** Computes the maximum of each 32-bit float lane of two 128-bit vectors. */
  export function max(a: v128, b: v128): v128;
  /** Computes the absolute value of each 32-bit float lane of a 128-bit vector. */
  export function abs(a: v128): v128;
  /** Computes the square root of each 32-bit float lane of a 128-bit vector. */
  export function sqrt(a: v128): v128;
  /** Computes which 32-bit float lanes of two 128-bit vectors are equal. */
  export function eq(a: v128, b: v128): v128;
  /** Computes which 32-bit float lanes of two 128-bit vectors are not equal. */
  export function ne(a: v128, b: v128): v128;
  /** Computes which 32-bit float lanes of the first 128-bit vector are less than those of the second. */
  export function lt(a: v128, b: v128): v128;
  /** Computes which 32-bit float lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le(a: v128, b: v128): v128;
  /** Computes which 32-bit float lanes of the first 128-bit vector are greater than those of the second. */
  export function gt(a: v128, b: v128): v128;
  /** Computes which 32-bit float lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge(a: v128, b: v128): v128;
  /** Converts each 32-bit signed integer lane of a 128-bit vector to floating point. */
  export function convert_s_i32x4(a: v128): v128;
  /** Converts each 32-bit unsigned integer lane of a 128-bit vector to floating point. */
  export function convert_u_i32x4(a: v128): v128;
}
/** Initializes a 128-bit vector from two 64-bit float values. Arguments must be compile-time constants. */
declare function f64x2(a: f64, b: f64): v128;
declare namespace f64x2 {
  /** Creates a 128-bit vector with two identical 64-bit float lanes. */
  export function splat(x: f64): v128;
  /** Extracts one 64-bit float lane from a 128-bit vector as a scalar. */
  export function extract_lane(x: v128, idx: u8): f64;
  /** Replaces one 64-bit float lane in a 128-bit vector. */
  export function replace_lane(x: v128, idx: u8, value: f64): v128;
  /** Adds each 64-bit float lane of two 128-bit vectors. */
  export function add(a: v128, b: v128): v128;
  /** Subtracts each 64-bit float lane of two 128-bit vectors. */
  export function sub(a: v128, b: v128): v128;
  /** Multiplies each 64-bit float lane of two 128-bit vectors. */
  export function mul(a: v128, b: v128): v128;
  /** Divides each 64-bit float lane of two 128-bit vectors. */
  export function div(a: v128, b: v128): v128;
  /** Negates each 64-bit float lane of a 128-bit vector. */
  export function neg(a: v128): v128;
  /** Computes the minimum of each 64-bit float lane of two 128-bit vectors. */
  export function min(a: v128, b: v128): v128;
  /** Computes the maximum of each 64-bit float lane of two 128-bit vectors. */
  export function max(a: v128, b: v128): v128;
  /** Computes the absolute value of each 64-bit float lane of a 128-bit vector. */
  export function abs(a: v128): v128;
  /** Computes the square root of each 64-bit float lane of a 128-bit vector. */
  export function sqrt(a: v128): v128;
  /** Computes which 64-bit float lanes of two 128-bit vectors are equal. */
  export function eq(a: v128, b: v128): v128;
  /** Computes which 64-bit float lanes of two 128-bit vectors are not equal. */
  export function ne(a: v128, b: v128): v128;
  /** Computes which 64-bit float lanes of the first 128-bit vector are less than those of the second. */
  export function lt(a: v128, b: v128): v128;
  /** Computes which 64-bit float lanes of the first 128-bit vector are less than or equal those of the second. */
  export function le(a: v128, b: v128): v128;
  /** Computes which 64-bit float lanes of the first 128-bit vector are greater than those of the second. */
  export function gt(a: v128, b: v128): v128;
  /** Computes which 64-bit float lanes of the first 128-bit vector are greater than or equal those of the second. */
  export function ge(a: v128, b: v128): v128;
  /** Converts each 64-bit signed integer lane of a 128-bit vector to floating point. */
  export function convert_s_i64x2(a: v128): v128;
  /** Converts each 64-bit unsigned integer lane of a 128-bit vector to floating point. */
  export function convert_u_i64x2(a: v128): v128;
}
declare namespace v8x16 {
  /** Selects 8-bit lanes from either 128-bit vector according to the specified lane indexes. */
  export function shuffle(a: v128, b: v128, l0: u8, l1: u8, l2: u8, l3: u8, l4: u8, l5: u8, l6: u8, l7: u8, l8: u8, l9: u8, l10: u8, l11: u8, l12: u8, l13: u8, l14: u8, l15: u8): v128;
}
/** Macro type evaluating to the underlying native WebAssembly type. */
declare type native<T> = T;

/** Pseudo-class representing the backing class of integer types. */
declare class _Integer {
  /** Smallest representable value. */
  static readonly MIN_VALUE: number;
  /** Largest representable value. */
  static readonly MAX_VALUE: number;
  /** Converts a string to an integer of this type. */
  static parseInt(value: string, radix?: number): number;
  /** Converts this integer to a string. */
  toString(): string;
}

/** Pseudo-class representing the backing class of floating-point types. */
declare class _Float {
  /** Difference between 1 and the smallest representable value greater than 1. */
  static readonly EPSILON: f32 | f64;
  /** Smallest representable value. */
  static readonly MIN_VALUE: f32 | f64;
  /** Largest representable value. */
  static readonly MAX_VALUE: f32 | f64;
  /** Smallest safely representable integer value. */
  static readonly MIN_SAFE_INTEGER: f32 | f64;
  /** Largest safely representable integer value. */
  static readonly MAX_SAFE_INTEGER: f32 | f64;
  /** Value representing positive infinity. */
  static readonly POSITIVE_INFINITY: f32 | f64;
  /** Value representing negative infinity. */
  static readonly NEGATIVE_INFINITY: f32 | f64;
  /** Value representing 'not a number'. */
  static readonly NaN: f32 | f64;
  /** Returns a boolean value that indicates whether a value is the reserved value NaN (not a number). */
  static isNaN(value: f32 | f64): bool;
  /** Returns true if passed value is finite. */
  static isFinite(value: f32 | f64): bool;
  /** Returns true if the value passed is a safe integer. */
  static isSafeInteger(value: f32 | f64): bool;
  /** Returns true if the value passed is an integer, false otherwise. */
  static isInteger(value: f32 | f64): bool;
  /** Converts a string to an integer. */
  static parseInt(value: string, radix?: i32): f32 | f64;
  /** Converts a string to a floating-point number. */
  static parseFloat(value: string): f32 | f64;
  /** Converts this floating-point number to a string. */
  toString(this: f64): string;
}

/** Backing class of signed 8-bit integers. */
declare const I8: typeof _Integer;
/** Backing class of signed 16-bit integers. */
declare const I16: typeof _Integer;
/** Backing class of signed 32-bit integers. */
declare const I32: typeof _Integer;
/** Backing class of signed 64-bit integers. */
declare const I64: typeof _Integer;
/** Backing class of signed size integers. */
declare const Isize: typeof _Integer;
/** Backing class of unsigned 8-bit integers. */
declare const U8: typeof _Integer;
/** Backing class of unsigned 16-bit integers. */
declare const U16: typeof _Integer;
/** Backing class of unsigned 32-bit integers. */
declare const U32: typeof _Integer;
/** Backing class of unsigned 64-bit integers. */
declare const U64: typeof _Integer;
/** Backing class of unsigned size integers. */
declare const Usize: typeof _Integer;
/** Backing class of 32-bit floating-point values. */
declare const F32: typeof _Float;
/** Backing class of 64-bit floating-point values. */
declare const F64: typeof _Float;

// User-defined diagnostic macros

/** Emits a user-defined diagnostic error when encountered. */
declare function ERROR(message?: any): void;
/** Emits a user-defined diagnostic warning when encountered. */
declare function WARNING(message?: any): void;
/** Emits a user-defined diagnostic info when encountered. */
declare function INFO(message?: any): void;

// Polyfills

/** Performs the sign-agnostic reverse bytes **/
declare function bswap<T = i8 | u8 | i16 | u16 | i32 | u32 | i64 | u64 | isize | usize>(value: T): T;
/** Performs the sign-agnostic reverse bytes only for last 16-bit **/
declare function bswap16<T = i8 | u8 | i16 | u16 | i32 | u32>(value: T): T;

// Standard library

/** Memory operations. */
declare namespace memory {
  /** Returns the current memory size in units of pages. One page is 64kb. */
  export function size(): i32;
  /** Grows linear memory by a given unsigned delta of pages. One page is 64kb. Returns the previous memory size in units of pages or `-1` on failure. */
  export function grow(value: i32): i32;
  /** Sets n bytes beginning at the specified destination in memory to the specified byte value. */
  export function fill(dst: usize, value: u8, count: usize): void;
  /** Copies n bytes from the specified source to the specified destination in memory. These regions may overlap. */
  export function copy(dst: usize, src: usize, n: usize): void;
  /** Copies elements from a passive element segment to a table. */
  // export function init(segmentIndex: u32, srcOffset: usize, dstOffset: usize, n: usize): void;
  /** Prevents further use of a passive element segment. */
  // export function drop(segmentIndex: u32): void;
  /** Copies elements from one region of a table to another region. */
  export function allocate(size: usize): usize;
  /** Disposes a chunk of memory by its pointer. */
  export function free(ptr: usize): void;
  /** Compares two chunks of memory. Returns `0` if equal, otherwise the difference of the first differing bytes. */
  export function compare(vl: usize, vr: usize, n: usize): i32;
  /** Resets the allocator to its initial state, if supported. */
  export function reset(): void;
}

/** Garbage collector operations. */
declare namespace gc {
  /** Allocates a managed object identified by its visitor function. */
  export function allocate(size: usize, visitFn: (ref: usize) => void): usize;
  /** Performs a full garbage collection cycle. */
  export function collect(): void;
}

/** Table operations. */
declare namespace table {
  /** Copies elements from a passive element segment to a table. */
  // export function init(elementIndex: u32, srcOffset: u32, dstOffset: u32, n: u32): void;
  /** Prevents further use of a passive element segment. */
  // export function drop(elementIndex: u32): void;
  /** Copies elements from one region of a table to another region. */
  // export function copy(dest: u32, src: u32, n: u32): void;
}

/** Class representing a generic, fixed-length raw binary data buffer. */
declare class ArrayBuffer {
  /** The size, in bytes, of the array. */
  readonly byteLength: i32;
  /** Unsafe pointer to the start of the data in memory. */
  readonly data: usize;
  /** Returns true if value is one of the ArrayBuffer views, such as typed array or a DataView **/
  static isView<T>(value: T): bool;
  /** Constructs a new array buffer of the given length in bytes. */
  constructor(length: i32, unsafe?: bool);
  /** Returns a copy of this array buffer's bytes from begin, inclusive, up to end, exclusive. */
  slice(begin?: i32, end?: i32): ArrayBuffer;
  /** Returns a string representation of ArrayBuffer. */
  toString(): string;
}

/** The `DataView` view provides a low-level interface for reading and writing multiple number types in a binary `ArrayBuffer`, without having to care about the platform's endianness. */
declare class DataView {
  /** The `buffer` accessor property represents the `ArrayBuffer` or `SharedArrayBuffer` referenced by the `DataView` at construction time. */
  readonly buffer: ArrayBuffer;
  /** The `byteLength` accessor property represents the length (in bytes) of this view from the start of its `ArrayBuffer` or `SharedArrayBuffer`. */
  readonly byteLength: i32;
  /** The `byteOffset` accessor property represents the offset (in bytes) of this view from the start of its `ArrayBuffer` or `SharedArrayBuffer`. */
  readonly byteOffset: i32;
  /** Constructs a new `DataView` with the given properties */
  constructor(buffer: ArrayBuffer, byteOffset?: i32, byteLength?: i32);
  /** The `getFloat32()` method gets a signed 32-bit float (float) at the specified byte offset from the start of the `DataView`. */
  getFloat32(byteOffset: i32, littleEndian?: boolean): f32;
  /** The `getFloat64()` method gets a signed 64-bit float (double) at the specified byte offset from the start of the `DataView`. */
  getFloat64(byteOffset: i32, littleEndian?: boolean): f64;
  /** The `getInt8()` method gets a signed 8-bit integer (byte) at the specified byte offset from the start of the `DataView`. */
  getInt8(byteOffset: i32): i8;
  /** The `getInt16()` method gets a signed 16-bit integer (short) at the specified byte offset from the start of the `DataView`. */
  getInt16(byteOffset: i32, littleEndian?: boolean): i16;
  /** The `getInt32()` method gets a signed 32-bit integer (long) at the specified byte offset from the start of the `DataView`. */
  getInt32(byteOffset: i32, littleEndian?: boolean): i32;
  /** The `getInt64()` method gets a signed 64-bit integer (long long) at the specified byte offset from the start of the `DataView`. */
  getInt64(byteOffset: i32, littleEndian?: boolean): i64;
  /** The `getUint8()` method gets an unsigned 8-bit integer (unsigned byte) at the specified byte offset from the start of the `DataView`. */
  getUint8(byteOffset: i32): u8;
  /** The `getUint16()` method gets an unsigned 16-bit integer (unsigned short) at the specified byte offset from the start of the `DataView`. */
  getUint16(byteOffset: i32, littleEndian?: boolean): u16;
  /** The `getUint32()` method gets an unsigned 32-bit integer (unsigned long) at the specified byte offset from the start of the `DataView`. */
  getUint32(byteOffset: i32, littleEndian?: boolean): u32;
  /** The `getUint64()` method gets an unsigned 64-bit integer (unsigned long long) at the specified byte offset from the start of the `DataView`. */
  getUint64(byteOffset: i32, littleEndian?: boolean): u64;
  /** The `setFloat32()` method stores a signed 32-bit float (float) value at the specified byte offset from the start of the `DataView`. */
  setFloat32(byteOffset: i32, value: f32, littleEndian?: boolean): void;
  /** The `setFloat64()` method stores a signed 64-bit float (double) value at the specified byte offset from the start of the `DataView`. */
  setFloat64(byteOffset: i32, value: f64, littleEndian?: boolean): void;
  /** The `setInt8()` method stores a signed 8-bit integer (byte) value at the specified byte offset from the start of the `DataView`. */
  setInt8(byteOffset: i32, value: i8): void;
  /** The `setInt16()` method stores a signed 16-bit integer (short) value at the specified byte offset from the start of the `DataView`. */
  setInt16(byteOffset: i32, value: i16, littleEndian?: boolean): void;
  /** The `setInt32()` method stores a signed 32-bit integer (long) value at the specified byte offset from the start of the `DataView`. */
  setInt32(byteOffset: i32, value: i32, littleEndian?: boolean): void;
  /** The `setInt64()` method stores a signed 64-bit integer (long long) value at the specified byte offset from the start of the `DataView`. */
  setInt64(byteOffset: i32, value: i64, littleEndian?: boolean): void;
  /** The `setUint8()` method stores an unsigned 8-bit integer (byte) value at the specified byte offset from the start of the `DataView`. */
  setUint8(byteOffset: i32, value: u8): void;
  /** The `setUint16()` method stores an unsigned 16-bit integer (unsigned short) value at the specified byte offset from the start of the `DataView`. */
  setUint16(byteOffset: i32, value: u16, littleEndian?: boolean): void;
  /** The `setUint32()` method stores an unsigned 32-bit integer (unsigned long) value at the specified byte offset from the start of the `DataView`. */
  setUint32(byteOffset: i32, value: u32, littleEndian?: boolean): void;
  /** The `setUint64()` method stores an unsigned 64-bit integer (unsigned long long) value at the specified byte offset from the start of the `DataView`. */
  setUint64(byteOffset: i32, value: u64, littleEndian?: boolean): void;
  /** Returns a string representation of DataView. */
  toString(): string;
}

interface ArrayLike<T> {
  length: i32;
  // [key: number]: T;
}

/** Interface for a typed view on an array buffer. */
interface ArrayBufferView<T> {
  [key: number]: T;
  /** The {@link ArrayBuffer} referenced by this view. */
  readonly buffer: ArrayBuffer;
  /** The offset in bytes from the start of the referenced {@link ArrayBuffer}. */
  readonly byteOffset: i32;
  /** The length in bytes from the start of the referenced {@link ArrayBuffer}. */
  readonly byteLength: i32;
}

/* @internal */
declare abstract class TypedArray<T> implements ArrayBufferView<T> {
  [key: number]: T;
  /** Number of bytes per element. */
  static readonly BYTES_PER_ELEMENT: usize;
  /** Constructs a new typed array. */
  constructor(length: i32);
  /** The {@link ArrayBuffer} referenced by this view. */
  readonly buffer: ArrayBuffer;
  /** The offset in bytes from the start of the referenced {@link ArrayBuffer}. */
  readonly byteOffset: i32;
  /** The length in bytes from the start of the referenced {@link ArrayBuffer}. */
  readonly byteLength: i32;
  /** The length (in elements). */
  readonly length: i32;
  /** Returns a new TypedArray of this type on the same ArrayBuffer from begin inclusive to end exclusive. */
  subarray(begin?: i32, end?: i32): this;
  /**  The reduce() method applies a function against an accumulator and each value of the typed array (from left-to-right) has to reduce it to a single value. This method has the same algorithm as Array.prototype.reduce(). */
  reduce<W>(
    callbackfn: (accumulator: W, value: T, index: i32, self: this) => W,
    initialValue: W,
  ): W;
  /**  The reduceRight() method applies a function against an accumulator and each value of the typed array (from left-to-right) has to reduce it to a single value, starting from the end of the array. This method has the same algorithm as Array.prototype.reduceRight(). */
  reduceRight<W>(
    callbackfn: (accumulator: W, value: T, index: i32, self: this) => W,
    initialValue: W,
  ): W;
  /** The some() method tests whether some element in the typed array passes the test implemented by the provided function. This method has the same algorithm as Array.prototype.some().*/
  some(callbackfn: (value: T, index: i32, self: this) => bool): bool;
  /** The map() method creates a new typed array with the results of calling a provided function on every element in this typed array. This method has the same algorithm as Array.prototype.map().*/
  map(callbackfn: (value: T, index: i32, self: this) => T): this;
  /** The sort() method sorts the elements of a typed array numerically in place and returns the typed array. This method has the same algorithm as Array.prototype.sort(), except that sorts the values numerically instead of as strings. TypedArray is one of the typed array types here. */
  sort(callback?: (a: T, b: T) => i32): this;
  /** The fill() method fills all the elements of a typed array from a start index to an end index with a static value. This method has the same algorithm as Array.prototype.fill(). */
  fill(value: T, start?: i32, end?: i32): this;
  /** The findIndex() method returns an index in the typed array, if an element in the typed array satisfies the provided testing function. Otherwise -1 is returned. See also the find() [not implemented] method, which returns the value of a found element in the typed array instead of its index. */
  findIndex(callbackfn: (value: T, index: i32, self: this) => bool): i32;
  /** The every() method tests whether all elements in the typed array pass the test implemented by the provided function. This method has the same algorithm as Array.prototype.every(). */
  every(callbackfn: (value: T, index: i32, self: this) => bool): bool;
  /** The forEach() method executes a provided function once per array element. This method has the same algorithm as Array.prototype.forEach().*/
  forEach(callbackfn: (value: T, index: i32, self: this) => void): void;
}

/** An array of twos-complement 8-bit signed integers. */
declare class Int8Array extends TypedArray<i8> {}
/** An array of 8-bit unsigned integers. */
declare class Uint8Array extends TypedArray<u8> {}
/** A clamped array of 8-bit unsigned integers. */
declare class Uint8ClampedArray extends TypedArray<u8> {}
/** An array of twos-complement 16-bit signed integers. */
declare class Int16Array extends TypedArray<i16> {}
/** An array of 16-bit unsigned integers. */
declare class Uint16Array extends TypedArray<u16> {}
/** An array of twos-complement 32-bit signed integers. */
declare class Int32Array extends TypedArray<i32> {}
/** An array of 32-bit unsigned integers. */
declare class Uint32Array extends TypedArray<u32> {}
/** An array of twos-complement 64-bit signed integers. */
declare class Int64Array extends TypedArray<i64> {}
/** An array of 64-bit unsigned integers. */
declare class Uint64Array extends TypedArray<u64> {}
/** An array of 32-bit floating point numbers. */
declare class Float32Array extends TypedArray<f32> {}
/** An array of 64-bit floating point numbers. */
declare class Float64Array extends TypedArray<f64> {}

/** Class representing a sequence of values of type `T`. */
declare class Array<T> {

  static isArray<U>(value: any): value is Array<any>;

  [key: number]: T;
  /** Current length of the array. */
  length: i32;
  /** Constructs a new array. */
  constructor(capacity?: i32);

  fill(value: T, start?: i32, end?: i32): this;
  every(callbackfn: (element: T, index: i32, array?: Array<T>) => bool): bool;
  findIndex(predicate: (element: T, index: i32, array?: Array<T>) => bool): i32;
  includes(searchElement: T, fromIndex?: i32): bool;
  indexOf(searchElement: T, fromIndex?: i32): i32;
  lastIndexOf(searchElement: T, fromIndex?: i32): i32;
  push(element: T): i32;
  concat(items: T[]): T[];
  copyWithin(target: i32, start: i32, end?: i32): this;
  pop(): T;
  forEach(callbackfn: (value: T, index: i32, array: Array<T>) => void): void;
  map<U>(callbackfn: (value: T, index: i32, array: Array<T>) => U): Array<U>;
  filter(callbackfn: (value: T, index: i32, array: Array<T>) => bool): Array<T>;
  reduce<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: i32, array: Array<T>) => U, initialValue: U): U;
  reduceRight<U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: i32, array: Array<T>) => U, initialValue: U): U;
  shift(): T;
  some(callbackfn: (element: T, index: i32, array?: Array<T>) => bool): bool;
  unshift(element: T): i32;
  slice(from: i32, to?: i32): Array<T>;
  splice(start: i32, deleteCount?: i32): Array<T>;
  sort(comparator?: (a: T, b: T) => i32): this;
  join(separator?: string): string;
  reverse(): T[];
  toString(): string;
}

/** Class representing a sequence of characters. */
declare class String {

  static fromCharCode(ls: i32, hs?: i32): string;
  static fromCharCodes(arr: u16[]): string;
  static fromCodePoint(code: i32): string;
  static fromCodePoints(arr: i32[]): string;

  readonly length: i32;
  readonly lengthUTF8: i32;

  charAt(index: u32): string;
  charCodeAt(index: u32): u16;
  concat(other: string): string;
  endsWith(other: string): bool;
  indexOf(other: string, fromIndex?: i32): u32;
  lastIndexOf(other: string, fromIndex?: i32): i32;
  includes(other: string): bool;
  startsWith(other: string): bool;
  substr(start: u32, length?: u32): string;
  substring(start: u32, end?: u32): string;
  trim(): string;
  trimLeft(): string;
  trimRight(): string;
  trimStart(): string;
  trimEnd(): string;
  padStart(targetLength: i32, padString?: string): string;
  padEnd(targetLength: i32, padString?: string): string;
  repeat(count?: i32): string;
  slice(beginIndex: i32, endIndex?: i32): string;
  split(separator?: string, limit?: i32): string[];
  toString(): string;
  static fromUTF8(ptr: usize, len: usize): string;
  toUTF8(): usize;
}

/** Class for representing a runtime error. Base class of all errors. */
declare class Error {

  /** Error name. */
  name: string;

  /** Message provided on construction. */
  message: string;

  /** Stack trace. */
  stack?: string;

  /** Constructs a new error, optionally with a message. */
  constructor(message?: string);

  /** Method returns a string representing the specified Error class. */
  toString(): string;
}

/** Class for indicating an error when a value is not in the set or range of allowed values. */
declare class RangeError extends Error { }

/** Class for indicating an error when a value is not of the expected type. */
declare class TypeError extends Error { }

/** Class for indicating an error when trying to interpret syntactically invalid code. */
declare class SyntaxError extends Error { }

interface Boolean {}
interface Function {}
interface IArguments {}
interface Number {}
interface Object {}
interface RegExp {}

declare class Map<K,V> {
  readonly size: i32;
  has(key: K): bool;
  set(key: K, value: V): void;
  get(key: K): V;
  delete(key: K): bool;
  clear(): void;
  toString(): string;
}

declare class Set<T> {
  readonly size: i32;
  has(value: T): bool;
  add(value: T): void;
  delete(value: T): bool;
  clear(): void;
  toString(): string;
}

interface SymbolConstructor {
  readonly hasInstance: symbol;
  readonly isConcatSpreadable: symbol;
  readonly isRegExp: symbol;
  readonly iterator: symbol;
  readonly match: symbol;
  readonly replace: symbol;
  readonly search: symbol;
  readonly species: symbol;
  readonly split: symbol;
  readonly toPrimitive: symbol;
  readonly toStringTag: symbol;
  readonly unscopables: symbol;
  (description?: string | null): symbol;
  for(key: string): symbol;
  keyFor(sym: symbol): string | null;
}

declare const Symbol: SymbolConstructor;

interface IMath<T> {
  /** The base of natural logarithms, e, approximately 2.718. */
  readonly E: T;
  /** The natural logarithm of 2, approximately 0.693. */
  readonly LN2: T;
  /** The natural logarithm of 10, approximately 2.302. */
  readonly LN10: T;
  /** The base 2 logarithm of e, approximately 1.442. */
  readonly LOG2E: T;
  /** The base 10 logarithm of e, approximately 0.434. */
  readonly LOG10E: T;
  /** The ratio of the circumference of a circle to its diameter, approximately 3.14159. */
  readonly PI: T;
  /** The square root of 1/2, approximately 0.707. */
  readonly SQRT1_2: T;
  /** The square root of 2, approximately 1.414. */
  readonly SQRT2: T;
  /** Returns the absolute value of `x`. */
  abs(x: T): T;
  /** Returns the arccosine (in radians) of `x`. */
  acos(x: T): T;
  /** Returns the hyperbolic arc-cosine of `x`. */
  acosh(x: T): T;
  /** Returns the arcsine (in radians) of `x` */
  asin(x: T): T;
  /** Returns the hyperbolic arcsine of `x`. */
  asinh(x: T): T;
  /** Returns the arctangent (in radians) of `x`. */
  atan(x: T): T;
  /** Returns the arctangent of the quotient of its arguments. */
  atan2(y: T, x: T): T;
  /** Returns the hyperbolic arctangent of `x`. */
  atanh(x: T): T;
  /** Returns the cube root of `x`. */
  cbrt(x: T): T;
  /** Returns the smallest integer greater than or equal to `x`. */
  ceil(x: T): T;
  /** Returns the number of leading zero bits in the 32-bit binary representation of `x`. */
  clz32(x: T): T;
  /** Returns the cosine (in radians) of `x`. */
  cos(x: T): T;
  /** Returns the hyperbolic cosine of `x`. */
  cosh(x: T): T;
  /** Returns e to the power of `x`. */
  exp(x: T): T;
  /** Returns e to the power of `x`, minus 1. */
  expm1(x: T): T;
  /** Returns the largest integer less than or equal to `x`. */
  floor(x: T): T;
  /** Returns the nearest 32-bit single precision float representation of `x`. */
  fround(x: T): f32;
  /** Returns the square root of the sum of squares of its arguments. */
  hypot(value1: T, value2: T): T; // TODO: rest
  /** Returns the result of the C-like 32-bit multiplication of `a` and `b`. */
  imul(a: T, b: T): T;
  /** Returns the natural logarithm (base e) of `x`. */
  log(x: T): T;
  /** Returns the base 10 logarithm of `x`. */
  log10(x: T): T;
  /** Returns the natural logarithm (base e) of 1 + `x`. */
  log1p(x: T): T;
  /** Returns the base 2 logarithm of `x`. */
  log2(x: T): T;
  /** Returns the largest-valued number of its arguments. */
  max(value1: T, value2: T): T; // TODO: rest
  /** Returns the lowest-valued number of its arguments. */
  min(value1: T, value2: T): T; // TODO: rest
  /** Returns `base` to the power of `exponent`. */
  pow(base: T, exponent: T): T;
  /** Returns a pseudo-random number in the range from 0.0 inclusive up to but not including 1.0. */
  random(): T;
  /** Returns the value of `x` rounded to the nearest integer. */
  round(x: T): T;
  /** Returns the sign of `x`, indicating whether the number is positive, negative or zero. */
  sign(x: T): T;
  /** Returns whether the sign bit of `x` is set */
  signbit(x: T): bool;
  /** Returns the sine of `x`. */
  sin(x: T): T;
  /** Returns the hyperbolic sine of `x`. */
  sinh(x: T): T;
  /** Returns the square root of `x`. */
  sqrt(x: T): T;
  /** Returns the tangent of `x`. */
  tan(x: T): T;
  /** Returns the hyperbolic tangent of `x`. */
  tanh(x: T): T;
  /** Returns the integer part of `x` by removing any fractional digits. */
  trunc(x: T): T;
}

interface INativeMath<T> extends IMath<T> {
  /** Contains sin value produced after Math/Mathf.sincos */
  sincos_sin: T;
  /** Contains cos value produced after Math/Mathf.sincos */
  sincos_cos: T;
  /** Seeds the random number generator. */
  seedRandom(value: i64): void;
  /** Returns the floating-point remainder of `x / y` (rounded towards zero). */
  mod(x: T, y: T): T;
  /** Returns the floating-point remainder of `x / y` (rounded to nearest). */
  rem(x: T, y: T): T;
  /** Returns sin and cos simultaneously for same angle. Results stored to `sincos_s32/64` and `sincos_c32/64` globals */
  sincos(x: T): void;
}

/** Double precision math imported from JavaScript. */
declare const JSMath: IMath<f64>;
/** Double precision math implemented natively. */
declare const NativeMath: INativeMath<f64>;
/** Single precision math implemented natively. */
declare const NativeMathf: INativeMath<f32>;
/** Alias of {@link NativeMath} or {@link JSMath} respectively. Defaults to `NativeMath`. */
declare const Math: IMath<f64>;
/** Alias of {@link NativeMathf} or {@link JSMath} respectively. Defaults to `NativeMathf`. */
declare const Mathf: IMath<f32>;

declare class Date {
  /** Returns the UTC timestamp in milliseconds of the specified date. */
  static UTC(
    year: i32,
    month: i32,
    day: i32,
    hour: i32,
    minute: i32,
    second: i32,
    millisecond: i32
  ): i64;
  /** Returns the current UTC timestamp in milliseconds. */
  static now(): i64;
  /** Constructs a new date object from an UTC timestamp in milliseconds. */
  constructor(value: i64);
  /** Returns the UTC timestamp of this date in milliseconds. */
  getTime(): i64;
  /** Sets the UTC timestamp of this date in milliseconds. */
  setTime(value: i64): i64;
}

/** Environmental tracing function for debugging purposes. */
declare function trace(msg: string, n?: i32, a0?: f64, a1?: f64, a2?: f64, a3?: f64, a4?: f64): void;

// Decorators

interface TypedPropertyDescriptor<T> {
  configurable?: boolean;
  enumerable?: boolean;
  writable?: boolean;
  value?: T;
  get?(): T;
  set?(value: T): void;
}

/** Annotates an element as a program global. */
declare function global(
  target: any,
  propertyKey: string,
  descriptor: TypedPropertyDescriptor<any>
): TypedPropertyDescriptor<any> | void;

/** Annotates a method as a binary operator overload for the specified `token`. */
declare function operator(token:
  "[]" | "[]=" | "{}" | "{}=" | "==" | "!=" | ">" | "<" | "<=" | ">=" |
  ">>" | ">>>" | "<<" |  "&"  | "|"  | "^"  | "+" | "-" | "*"  | "**" | "/"  | "%"
): (
  target: any,
  propertyKey: string,
  descriptor: TypedPropertyDescriptor<any>
) => TypedPropertyDescriptor<any> | void;

declare namespace operator {
  /** Annotates a method as a binary operator overload for the specified `token`. */
  export function binary(token:
    "[]" | "[]=" | "{}" | "{}=" | "==" | "!=" | ">" | "<" | "<=" | ">=" |
    ">>" | ">>>" | "<<" |  "&"  | "|"  | "^"  | "+" | "-" | "*"  | "**" | "/"  | "%"
  ): (
    target: any,
    propertyKey: string,
    descriptor: TypedPropertyDescriptor<any>
  ) => TypedPropertyDescriptor<any> | void;
  /** Annotates a method as an unary prefix operator overload for the specified `token`. */
  export function prefix(token: "!" | "~" | "+" | "-" | "++" | "--"): (
    target: any,
    propertyKey: string,
    descriptor: TypedPropertyDescriptor<any>
  ) => TypedPropertyDescriptor<any> | void;
  /** Annotates a method as an unary postfix operator overload for the specified `token`. */
  export function postfix(token: "++" | "--"): (
    target: any,
    propertyKey: string,
    descriptor: TypedPropertyDescriptor<any>
  ) => TypedPropertyDescriptor<any> | void;
}

/** Annotates a class as being unmanaged with limited capabilities. */
declare function unmanaged(constructor: Function): void;

/** Annotates a class as being sealed / non-derivable. */
declare function sealed(constructor: Function): void;

/** Annotates a method, function or constant global as always inlined. */
declare function inline(
  target: any,
  propertyKey: string,
  descriptor: TypedPropertyDescriptor<any>
): TypedPropertyDescriptor<any> | void;

/** Annotates an explicit external name of a function or global. */
declare function external(namespace: string, name: string): (
  target: any,
  propertyKey: string,
  descriptor: TypedPropertyDescriptor<any>
) => TypedPropertyDescriptor<any> | void;

/** Annotates a global for lazy compilation. */
declare function lazy(
  target: any,
  propertyKey: string,
  descriptor: TypedPropertyDescriptor<any>
): TypedPropertyDescriptor<any> | void;

/** Annotates a function as the explicit start function. */
declare function start(
  target: any,
  propertyKey: string,
  descriptor: TypedPropertyDescriptor<any>
): TypedPropertyDescriptor<any> | void;