feat: Add transpileOnly flag to watch and build command (#307)

* add --transpileOnly flag

Ref #243

* Document --transpileOnly flag

* Make test check that stuff is build

* fix anchor id

* remove shorthand

* remove docs

README.md

@@ -9,18 +9,18 @@ Despite all the recent hype, setting up a new TypeScript (x React) library can b
 
 - [Features](#features)
 - [Quick Start](#quick-start)
-  - [`npm start` or `yarn start`](#npm-start-or-yarn-start)
-  - [`npm run build` or `yarn build`](#npm-run-build-or-yarn-build)
-  - [`npm test` or `yarn test`](#npm-test-or-yarn-test)
-  - [`npm run lint` or `yarn lint`](#npm-run-lint-or-yarn-lint)
-  - [`prepare` script](#prepare-script)
+  - [npm start or yarn start](#npm-start-or-yarn-start)
+  - [npm run build or yarn build](#npm-run-build-or-yarn-build)
+  - [npm test or yarn test](#npm-test-or-yarn-test)
+  - [npm run lint or yarn lint](#npm-run-lint-or-yarn-lint)
+  - [prepare script](#prepare-script)
 - [Optimizations](#optimizations)
   - [Development-only Expressions + Treeshaking](#development-only-expressions--treeshaking)
     - [Rollup Treeshaking](#rollup-treeshaking)
-    - [Advanced `babel-plugin-dev-expressions`](#advanced-babel-plugin-dev-expressions)
-      - [`__DEV__`](#__dev__)
-      - [`invariant`](#invariant)
-      - [`warning`](#warning)
+    - [Advanced babel-plugin-dev-expressions](#advanced-babel-plugin-dev-expressions)
+      - [__DEV__](#dev)
+      - [invariant](#invariant)
+      - [warning](#warning)
   - [Using lodash](#using-lodash)
   - [Error extraction](#error-extraction)
 - [Customization](#customization)
@@ -30,12 +30,13 @@ Despite all the recent hype, setting up a new TypeScript (x React) library can b
 - [Inspiration](#inspiration)
   - [Comparison to Microbundle](#comparison-to-microbundle)
 - [API Reference](#api-reference)
-  - [`tsdx watch`](#tsdx-watch)
-  - [`tsdx build`](#tsdx-build)
-  - [`tsdx test`](#tsdx-test)
-  - [`tsdx lint`](#tsdx-lint)
+  - [tsdx watch](#tsdx-watch)
+  - [tsdx build](#tsdx-build)
+  - [tsdx test](#tsdx-test)
+  - [tsdx lint](#tsdx-lint)
 - [Author](#author)
 - [License](#license)
+- [Contributors ✨](#contributors-%e2%9c%a8)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
@@ -315,7 +316,7 @@ The `options` object contains the following:
 export interface TsdxOptions {
   // path to file
   input: string;
-  // Safe name (for UMD)
+  // Name of package
   name: string;
   // JS target
   target: 'node' | 'browser';
@@ -325,12 +326,14 @@ export interface TsdxOptions {
   env: 'development' | 'production';
   // Path to tsconfig file
   tsconfig?: string;
-  // Is opt-in invariant error extraction active?
+  // Is error extraction running?
   extractErrors?: boolean;
   // Is minifying?
   minify?: boolean;
   // Is this the very first rollup config (and thus should one-off metadata be extracted)?
   writeMeta?: boolean;
+  // Only transpile, do not type check (makes compilation faster)
+  transpileOnly?: boolean;
 }
 ```
 
@@ -395,6 +398,7 @@ Options
   --tsconfig            Specify your custom tsconfig path (default <root-folder>/tsconfig.json)
   --verbose             Keep outdated console output in watch mode instead of clearing the screen
   --noClean             Don't clean the dist folder
+  --transpileOnly       Skip type checking
   -h, --help            Displays this message
 
 Examples
@@ -404,6 +408,7 @@ Examples
   $ tsdx watch --format cjs,esm,umd
   $ tsdx watch --tsconfig ./tsconfig.foo.json
   $ tsdx watch --noClean
+  $ tsdx watch --transpileOnly
 ```
 
 ### `tsdx build`
@@ -422,6 +427,7 @@ Options
   --format              Specify module format(s)  (default cjs,esm)
   --extractErrors       Opt-in to extracting invariant error codes
   --tsconfig            Specify your custom tsconfig path (default <root-folder>/tsconfig.json)
+  --transpileOnly       Skip type checking
   -h, --help            Displays this message
 
 Examples
@@ -431,6 +437,7 @@ Examples
   $ tsdx build --format cjs,esm,umd
   $ tsdx build --extractErrors
   $ tsdx build --tsconfig ./tsconfig.foo.json
+  $ tsdx build --transpileOnly
 ```
 
 ### `tsdx test`

src/createRollupConfig.ts

@@ -153,6 +153,7 @@ export async function createRollupConfig(opts: TsdxOptions) {
             target: 'esnext',
           },
         },
+        check: opts.transpileOnly === false,
       }),
       babelPluginTsdx({
         exclude: 'node_modules/**',

src/index.ts

@@ -335,6 +335,8 @@ prog
   .example('watch --noClean')
   .option('--tsconfig', 'Specify custom tsconfig path')
   .example('watch --tsconfig ./tsconfig.foo.json')
+  .option('--transpileOnly', 'Skip type checking', false)
+  .example('build --transpileOnly')
   .option('--extractErrors', 'Extract invariant errors to ./errors/codes.json.')
   .example('build --extractErrors')
   .action(async (dirtyOpts: any) => {
@@ -397,6 +399,8 @@ prog
   .example('build --format cjs,esm')
   .option('--tsconfig', 'Specify custom tsconfig path')
   .example('build --tsconfig ./tsconfig.foo.json')
+  .option('--transpileOnly', 'Skip type checking', false)
+  .example('build --transpileOnly')
   .option(
     '--extractErrors',
     'Extract errors to ./errors/codes.json and provide a url for decoding.'

src/types.ts

@@ -17,6 +17,8 @@ export interface TsdxOptions {
   minify?: boolean;
   // Is this the very first rollup config (and thus should one-off metadata be extracted)?
   writeMeta?: boolean;
+  // Only transpile, do not type check (makes compilation faster)
+  transpileOnly?: boolean;
 }
 
 export interface PackageJson {

test/tests/tsdx-build.test.js

@@ -1,7 +1,6 @@
 /**
  * @jest-environment node
  */
-'use strict';
 
 const shell = require('shelljs');
 const util = require('../fixtures/util');
@@ -85,6 +84,24 @@ describe('tsdx build', () => {
     expect(code).toBe(1);
   });
 
+  it('should only transpile and not type check', () => {
+    util.setupStageWithFixture(stageName, 'build-invalid');
+    const code = shell.exec('node ../dist/index.js build --transpileOnly').code;
+
+    expect(shell.test('-f', 'dist/index.js')).toBeTruthy();
+    expect(
+      shell.test('-f', 'dist/build-invalid.cjs.development.js')
+    ).toBeTruthy();
+    expect(
+      shell.test('-f', 'dist/build-invalid.cjs.production.min.js')
+    ).toBeTruthy();
+    expect(shell.test('-f', 'dist/build-invalid.esm.js')).toBeTruthy();
+
+    expect(shell.test('-f', 'dist/index.d.ts')).toBeTruthy();
+
+    expect(code).toBe(0);
+  });
+
   afterEach(() => {
     util.teardownStage(stageName);
   });