Give some love to the linter

lib/lint/formatters/asFormatter.js

@@ -0,0 +1,50 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const abstractFormatter_1 = require("tslint/lib/language/formatter/abstractFormatter");
+const colorBlue = "\u001b[93m";
+const colorYellow = "\u001b[93m";
+const colorRed = "\u001b[91m";
+const colorReset = "\u001b[0m";
+class Formatter extends abstractFormatter_1.AbstractFormatter {
+    format(failures) {
+        return `${this.mapToMessages(failures).join("\n")}\n`;
+    }
+    mapToMessages(failures) {
+        return failures.map((failure) => {
+            var fileName = failure.getFileName();
+            var failureString = failure.getFailure();
+            var ruleName = failure.getRuleName();
+            var lineAndCharacter = failure.getStartPosition().getLineAndCharacter();
+            var positionTuple = `:${lineAndCharacter.line + 1}:${lineAndCharacter.character + 1}`;
+            if (this.lastSeverity == failure.getRuleSeverity() && this.lastFailure == failureString) {
+                return "  in " + fileName + positionTuple;
+            }
+            else {
+                let message = this.lastSeverity ? "\n" : "";
+                switch (this.lastSeverity = failure.getRuleSeverity()) {
+                    case "warning": {
+                        message += colorYellow + "WARNING:" + colorReset;
+                        break;
+                    }
+                    case "error": {
+                        message += colorRed + "ERROR:" + colorReset;
+                        break;
+                    }
+                    default: {
+                        message += failure.getRuleSeverity();
+                        break;
+                    }
+                }
+                this.lastFailure = failureString;
+                return message + " " + failureString + " [" + ruleName + "]\n  in " + fileName + positionTuple;
+            }
+        });
+    }
+}
+Formatter.metadata = {
+    formatterName: "as",
+    description: "AssemblyScript's TSLint formatter.",
+    sample: "Similar to ASC's output.",
+    consumer: "human",
+};
+exports.Formatter = Formatter;