add --transpileOnly flag

Ref jaredpalmer#243

src/createRollupConfig.ts

@@ -142,6 +142,7 @@ export function createRollupConfig(opts: TsdxOptions) {
             target: 'esnext',
           },
         },
+        check: opts.transpileOnly === false,
       }),
       babelPluginTsdx({
         exclude: 'node_modules/**',

src/index.ts

@@ -288,7 +288,10 @@ prog
         scripts: {
           start: 'tsdx watch',
           build: 'tsdx build',
-          test: template === 'react' ? 'tsdx test --env=jsdom --passWithNoTests' : 'tsdx test',
+          test:
+            template === 'react'
+              ? 'tsdx test --env=jsdom --passWithNoTests'
+              : 'tsdx test',
           lint: 'tsdx lint',
         },
         peerDependencies: template === 'react' ? { react: '>=16' } : {},
@@ -358,6 +361,8 @@ prog
   .example('watch --noClean')
   .option('--tsconfig', 'Specify custom tsconfig path')
   .example('watch --tsconfig ./tsconfig.foo.json')
+  .option('--transpileOnly, -T', 'Skip type checking', false)
+  .example('build --transpileOnly')
   .option('--extractErrors', 'Extract invariant errors to ./errors/codes.json.')
   .example('build --extractErrors')
   .action(async (dirtyOpts: any) => {
@@ -420,6 +425,8 @@ prog
   .example('build --format cjs,esm')
   .option('--tsconfig', 'Specify custom tsconfig path')
   .example('build --tsconfig ./tsconfig.foo.json')
+  .option('--transpileOnly, -T', 'Skip type checking', false)
+  .example('build --transpileOnly')
   .option(
     '--extractErrors',
     'Extract errors to ./errors/codes.json and provide a url for decoding.'

src/types.ts

@@ -17,4 +17,6 @@ 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;
 }

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 +84,12 @@ 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(code).toBe(0);
+  });
+
   afterEach(() => {
     util.teardownStage(stageName);
   });