First implementation

Author: unlight

package.json

@@ -39,15 +39,18 @@
     "setupwebpack": "npm i -D webpack webpack-cli webpack-dev-server html-webpack-plugin source-map-loader ts-loader html-loader swc-loader @swc/core",
     "commit": "git-cz"
   },
+  "peerDependencies": {
+    "typescript": ">=3.2"
+  },
   "devDependencies": {
     "@semantic-release/changelog": "^3.0.2",
     "@semantic-release/commit-analyzer": "^7.0.0-beta.2",
     "@semantic-release/git": "^7.1.0-beta.3",
     "@semantic-release/github": "^5.4.0-beta.1",
     "@semantic-release/npm": "^5.2.0-beta.6",
     "@semantic-release/release-notes-generator": "^7.1.7",
-    "@types/node": "^12.0.2",
     "@types/jest": "^24.0.13",
+    "@types/node": "^12.0.2",
     "@typescript-eslint/eslint-plugin-tslint": "^1.9.0",
     "@typescript-eslint/parser": "^1.9.0",
     "eslint": "^5.16.0",
@@ -65,14 +68,19 @@
     "remark-toc": "^5.1.1",
     "semantic-release": "^16.0.0-beta.19",
     "simplytyped": "^3.1.0",
+    "source-map-loader": "^0.2.4",
     "ts-jest": "^24.0.2",
+    "ts-loader": "^6.0.2",
+    "ts-node": "^8.2.0",
     "tslint": "^5.16.0",
     "tslint-clean-code": "^0.2.9",
     "tslint-microsoft-contrib": "^6.2.0",
     "tslint-sonarts": "^1.9.0",
     "type-coverage": "^2.0.2",
     "typescript": "~3.4.5",
-    "watchexec-bin": "^1.0.0"
+    "watchexec-bin": "^1.0.0",
+    "webpack": "^4.33.0",
+    "webpack-cli": "^3.3.4"
   },
   "config": {
     "commitizen": {

src/index.ts

@@ -1,24 +1,30 @@
-import { PlainObject } from 'simplytyped';
+import * as ts from 'typescript';
 
-const dict: PlainObject = {};
-
-/**
- * Hello function whithout parameter
- * @returns result string
- */
-export function hello(): string;
-
-/**
- * This is hello function
- * @returns result string
- */
-export function hello(greet?: string) {
-    return `${greet} world`;
+function typescriptTransformUnspec<T extends ts.Node>(program: ts.Program): ts.TransformerFactory<T> {
+    return (context: ts.TransformationContext) => {
+        const visit: ts.Visitor = (node) => {
+            if (isSpecExpressionStatement(node)) {
+                return undefined;
+            }
+            return ts.visitEachChild(node, (child) => visit(child), context);
+        };
+        return (node) => ts.visitNode(node, visit);
+    };
 }
 
-export class X {
+function isSpecExpressionStatement(node: ts.Node) {
+    return (ts.isExpressionStatement(node) && ts.isCallExpression(node.expression)
+        && ts.isIdentifier(node.expression.expression)
+        && node.expression.expression.escapedText === 'it');
+}
 
-    constructor(
-        private readonly o: PlainObject,
-    ) { }
+if (typeof it !== 'function') {
+    // @ts-ignore
+    var it: any = () => { };
 }
+it('smoke', () => {
+    expect(typescriptTransformUnspec).toBeTruthy();
+});
+
+module.exports = typescriptTransformUnspec;
+module.exports.default = typescriptTransformUnspec;

src/transformers/transformer.ts

@@ -0,0 +1,48 @@
+const unspecTransformer = require('./src/index');
+
+module.exports = async (options) => ({
+    externals: {
+        typescript: 'typescript',
+    },
+    entry: {
+        lib: `${__dirname}/src/index.ts`,
+    },
+    output: {
+        path: `${__dirname}/dist`,
+        filename: '[name].js',
+    },
+    mode: 'development',
+    devtool: 'source-map',
+    module: {
+        rules: [
+            {
+                test: /\.js$/,
+                enforce: 'pre',
+                use: 'source-map-loader',
+            },
+            {
+                test: /\.tsx?$/,
+                exclude: /node_modules/,
+                use: {
+                    loader: 'ts-loader',
+                    options: {
+                        transpileOnly: true,
+                        getCustomTransformers: program => ({
+                            before: [
+                                unspecTransformer(program),
+                            ]
+                        }),
+                    },
+                }
+            },
+        ]
+    },
+    resolve: {
+        extensions: ['.js', '.ts', '.tsx'],
+    },
+    devServer: {
+        contentBase: `${__dirname}/dist`,
+    },
+    plugins: [
+    ]
+});