fix: add generateTypes cli option, check false value correctly

.changeset/cold-moose-cough.md

@@ -0,0 +1,5 @@
+---
+"microbundle": patch
+---
+
+fix: add generateTypes cli option, check false value correctly

README.md

@@ -175,11 +175,11 @@ Importing CSS files is supported via `import "./foo.css"`. By default, generated
 
 ```js
 // with the default external CSS:
-import './foo.css';  // generates a minified .css file in the output directory
+import './foo.css'; // generates a minified .css file in the output directory
 
 // with `microbundle --css inline`:
 import css from './foo.css';
-console.log(css);  // the generated minified stylesheet
+console.log(css); // the generated minified stylesheet
 ```
 
 **CSS Modules:** CSS files with names ending in `.module.css` are treated as a [CSS Modules](https://github.com/css-modules/css-modules).
@@ -237,11 +237,11 @@ It's also possible to configure repeatable short names for each mangled property
 
 The `--define` option can be used to inject or replace build-time constants when bundling. In addition to injecting string or number constants, prefixing the define name with `@` allows injecting JavaScript expressions.
 
-| Build command | Source code | Output |
-|---------------|-------------|--------|
-`microbundle --define VERSION=2` | `console.log(VERSION)` | `console.log(2)`
-`microbundle --define API_KEY='abc123'` | `console.log(API_KEY)` | `console.log("abc123")`
-`microbundle --define @assign=Object.assign` | `assign(a, b)` | `Object.assign(a, b)`
+| Build command                                | Source code            | Output                  |
+| -------------------------------------------- | ---------------------- | ----------------------- |
+| `microbundle --define VERSION=2`             | `console.log(VERSION)` | `console.log(2)`        |
+| `microbundle --define API_KEY='abc123'`      | `console.log(API_KEY)` | `console.log("abc123")` |
+| `microbundle --define @assign=Object.assign` | `assign(a, b)`         | `Object.assign(a, b)`   |
 
 ### All CLI Options <a name="options"></a>
 
@@ -279,6 +279,7 @@ Options
 	--jsx              A custom JSX pragma like React.createElement (default: h)
 	--jsxImportSource  Specify the automatic import source for JSX like preact
 	--tsconfig         Specify the path to a custom tsconfig.json
+	--generateTypes    Whether or not to generate types, if `types` or `typings` is set in `package.json` then it will default to be `true`
 	--css              Where to output CSS: "inline" or "external" (default: "external")
 	--css-modules      Configures .css to be treated as modules (default: null)
 	-h, --help         Displays this message

src/index.js

@@ -366,8 +366,10 @@ function createConfig(options, entry, format, writeMeta) {
 			: () => resolve(options.cwd, 'mangle.json');
 
 	const useTypescript = extname(entry) === '.ts' || extname(entry) === '.tsx';
-	const emitDeclaration = !!(options.generateTypes || pkg.types || pkg.typings);
-
+	const emitDeclaration =
+		options.generateTypes == null
+			? !!(pkg.types || pkg.typings)
+			: options.generateTypes;
 	const escapeStringExternals = ext =>
 		ext instanceof RegExp ? ext.source : escapeStringRegexp(ext);
 	const externalPredicate = new RegExp(

src/prog.js

@@ -69,6 +69,10 @@ export default handler => {
 			'A custom JSX pragma like React.createElement (default: h)',
 		)
 		.option('--tsconfig', 'Specify the path to a custom tsconfig.json')
+		.option(
+			'--generateTypes',
+			'Whether or not to generate types , if `types` or `typings` is set in `package.json` then it will default to be `true`',
+		)
 		.example('microbundle build --tsconfig tsconfig.build.json');
 
 	prog
@@ -89,5 +93,6 @@ export default handler => {
 				i: ['entry', 'entries', 'e'],
 				w: ['watch'],
 			},
+			boolean: ['generateTypes'],
 		});
 };

test/__snapshots__/index.test.js.snap

@@ -2538,6 +2538,63 @@ exports[`fixtures build shebang with microbundle 5`] = `
 "
 `;
 
+exports[`fixtures build ts-custom-declaration with microbundle 1`] = `
+"Used script: microbundle --generateTypes false
+
+Directory tree:
+
+ts-custom-declaration
+  dist
+    index.esm.js
+    index.esm.js.map
+    index.js
+    index.js.map
+    index.umd.js
+    index.umd.js.map
+  package.json
+  src
+    index.js
+  tsconfig.json
+  types
+    index.d.ts
+
+
+Build \\"tsCustomDeclarations\\" to dist:
+55 B: index.js.gz
+33 B: index.js.br
+61 B: index.esm.js.gz
+45 B: index.esm.js.br
+175 B: index.umd.js.gz
+125 B: index.umd.js.br"
+`;
+
+exports[`fixtures build ts-custom-declaration with microbundle 2`] = `6`;
+
+exports[`fixtures build ts-custom-declaration with microbundle 3`] = `
+"function n(){return 42}export{n as foo};
+//# sourceMappingURL=index.esm.js.map
+"
+`;
+
+exports[`fixtures build ts-custom-declaration with microbundle 4`] = `
+"exports.foo=function(){return 42};
+//# sourceMappingURL=index.js.map
+"
+`;
+
+exports[`fixtures build ts-custom-declaration with microbundle 5`] = `
+"!function(e,o){\\"object\\"==typeof exports&&\\"undefined\\"!=typeof module?o(exports):\\"function\\"==typeof define&&define.amd?define([\\"exports\\"],o):o((e||self).tsCustomDeclarations={})}(this,function(e){e.foo=function(){return 42}});
+//# sourceMappingURL=index.umd.js.map
+"
+`;
+
+exports[`fixtures build ts-custom-declaration with microbundle 6`] = `1`;
+
+exports[`fixtures build ts-custom-declaration with microbundle 7`] = `
+"export const foo: () => number;
+"
+`;
+
 exports[`fixtures build ts-declaration with microbundle 1`] = `
 "Used script: microbundle
 

test/fixtures/ts-custom-declaration/package.json

@@ -0,0 +1,9 @@
+{
+	"name": "ts-custom-declarations",
+	"main": "dist/index.js",
+	"types": "types/index.d.ts",
+	"source": "src/index.js",
+  "scripts": {
+    "build": "microbundle --generateTypes false"
+  }
+}

test/fixtures/ts-custom-declaration/src/index.js

@@ -0,0 +1,3 @@
+export function foo() {
+	return 42;
+}

test/fixtures/ts-custom-declaration/tsconfig.json

@@ -0,0 +1,6 @@
+{
+	"compilerOptions": {
+		"noEmit": true,
+		"allowJs": true
+	}
+}

test/fixtures/ts-custom-declaration/types/index.d.ts

@@ -0,0 +1 @@
+export const foo: () => number;

tools/build-fixture.js

@@ -49,7 +49,9 @@ export const buildDirectory = async fixtureDir => {
 	const dist = resolve(`${fixturePath}/dist`);
 	// clean up
 	await rimraf(dist);
-	await rimraf(resolve(`${fixturePath}/types`));
+	if (!fixturePath.endsWith('ts-custom-declaration')) {
+		await rimraf(resolve(`${fixturePath}/types`));
+	}
 	await rimraf(resolve(`${fixturePath}/.rts2_cache_cjs`));
 	await rimraf(resolve(`${fixturePath}/.rts2_cache_es`));
 	await rimraf(resolve(`${fixturePath}/.rts2_cache_umd`));