Add support for custom mangle.json paths

src/index.js

@@ -439,7 +439,12 @@ function createConfig(options, entry, format, writeMeta) {
 	let nameCache = {};
 	const bareNameCache = nameCache;
 	// Support "minify" field and legacy "mangle" field via package.json:
-	let minifyOptions = options.pkg.minify || options.pkg.mangle || {};
+	const rawMinifyValue = options.pkg.minify || options.pkg.mangle || {};
+	let minifyOptions = typeof rawMinifyValue === 'string' ? {} : rawMinifyValue;
+	const getNameCachePath =
+		typeof rawMinifyValue === 'string'
+			? () => resolve(options.cwd, rawMinifyValue)
+			: () => resolve(options.cwd, 'mangle.json');
 
 	const useTypescript = extname(entry) === '.ts' || extname(entry) === '.tsx';
 
@@ -449,9 +454,7 @@ function createConfig(options, entry, format, writeMeta) {
 
 	function loadNameCache() {
 		try {
-			nameCache = JSON.parse(
-				fs.readFileSync(resolve(options.cwd, 'mangle.json'), 'utf8'),
-			);
+			nameCache = JSON.parse(fs.readFileSync(getNameCachePath(), 'utf8'));
 			// mangle.json can contain a "minify" field, same format as the pkg.mangle:
 			if (nameCache.minify) {
 				minifyOptions = Object.assign(
@@ -593,7 +596,7 @@ function createConfig(options, entry, format, writeMeta) {
 							writeBundle() {
 								if (writeMeta && nameCache) {
 									fs.writeFile(
-										resolve(options.cwd, 'mangle.json'),
+										getNameCachePath(),
 										JSON.stringify(nameCache, null, 2),
 									);
 								}

test/__snapshots__/index.test.js.snap

@@ -423,7 +423,7 @@ Build \\"basicCss\\" to dist:
 
 exports[`fixtures build basic-css with microbundle 2`] = `7`;
 
-exports[`fixtures build basic-css with microbundle 3`] = `".testing{display:flex;color:red;background:#00f}"`;
+exports[`fixtures build basic-css with microbundle 3`] = `".testing{display:-webkit-box;display:flex;color:red;background:#00f}"`;
 
 exports[`fixtures build basic-css with microbundle 4`] = `
 "module.exports=function(){var e=document.createElement(\\"div\\");return e.className=\\"testing\\",e};
@@ -1374,6 +1374,199 @@ exports[`fixtures build macro with microbundle 5`] = `
 "
 `;
 
+exports[`fixtures build mangle-json-file with microbundle 1`] = `
+"Used script: microbundle
+
+Directory tree:
+
+mangle-json-file
+  dist
+    mangle-json-file.js
+    mangle-json-file.js.map
+    mangle-json-file.mjs
+    mangle-json-file.mjs.map
+    mangle-json-file.umd.js
+    mangle-json-file.umd.js.map
+  mangle.json
+  package.json
+  src
+    index.js
+    two.js
+
+
+Build \\"mangleJsonFile\\" to dist:
+103 B: mangle-json-file.js.gz
+89 B: mangle-json-file.js.br
+103 B: mangle-json-file.mjs.gz
+95 B: mangle-json-file.mjs.br
+198 B: mangle-json-file.umd.js.gz
+164 B: mangle-json-file.umd.js.br"
+`;
+
+exports[`fixtures build mangle-json-file with microbundle 2`] = `6`;
+
+exports[`fixtures build mangle-json-file with microbundle 3`] = `
+"var o={prop1:1,__p2:2};module.exports=function(){return console.log(o.prop1),console.log(o.__p2),o};
+//# sourceMappingURL=mangle-json-file.js.map
+"
+`;
+
+exports[`fixtures build mangle-json-file with microbundle 4`] = `
+"var o={prop1:1,__p2:2};export default function(){return console.log(o.prop1),console.log(o.__p2),o}
+//# sourceMappingURL=mangle-json-file.mjs.map
+"
+`;
+
+exports[`fixtures build mangle-json-file with microbundle 5`] = `
+"!function(e,n){\\"object\\"==typeof exports&&\\"undefined\\"!=typeof module?module.exports=n():\\"function\\"==typeof define&&define.amd?define(n):(e=e||self).mangleJsonFile=n()}(this,function(){var e={prop1:1,__p2:2};return function(){return console.log(e.prop1),console.log(e.__p2),e}});
+//# sourceMappingURL=mangle-json-file.umd.js.map
+"
+`;
+
+exports[`fixtures build minify-config with microbundle 1`] = `
+"Used script: microbundle
+
+Directory tree:
+
+minify-config
+  dist
+    minify-config.js
+    minify-config.js.map
+    minify-config.mjs
+    minify-config.mjs.map
+    minify-config.umd.js
+    minify-config.umd.js.map
+  package.json
+  src
+    index.js
+    two.js
+
+
+Build \\"minifyConfig\\" to dist:
+99 B: minify-config.js.gz
+85 B: minify-config.js.br
+99 B: minify-config.mjs.gz
+88 B: minify-config.mjs.br
+190 B: minify-config.umd.js.gz
+144 B: minify-config.umd.js.br"
+`;
+
+exports[`fixtures build minify-config with microbundle 2`] = `6`;
+
+exports[`fixtures build minify-config with microbundle 3`] = `
+"var o={prop1:1,o:2};module.exports=function(){return console.log(o.prop1),console.log(o.o),o};
+//# sourceMappingURL=minify-config.js.map
+"
+`;
+
+exports[`fixtures build minify-config with microbundle 4`] = `
+"var o={prop1:1,o:2};export default function(){return console.log(o.prop1),console.log(o.o),o}
+//# sourceMappingURL=minify-config.mjs.map
+"
+`;
+
+exports[`fixtures build minify-config with microbundle 5`] = `
+"!function(e,n){\\"object\\"==typeof exports&&\\"undefined\\"!=typeof module?module.exports=n():\\"function\\"==typeof define&&define.amd?define(n):(e=e||self).minifyConfig=n()}(this,function(){var e={prop1:1,o:2};return function(){return console.log(e.prop1),console.log(e.o),e}});
+//# sourceMappingURL=minify-config.umd.js.map
+"
+`;
+
+exports[`fixtures build minify-path-config with microbundle 1`] = `
+"Used script: microbundle
+
+Directory tree:
+
+minify-path-config
+  dist
+    minify-path-config.js
+    minify-path-config.js.map
+    minify-path-config.mjs
+    minify-path-config.mjs.map
+    minify-path-config.umd.js
+    minify-path-config.umd.js.map
+  minify.json
+  package.json
+  src
+    index.js
+    two.js
+
+
+Build \\"minifyPathConfig\\" to dist:
+103 B: minify-path-config.js.gz
+89 B: minify-path-config.js.br
+103 B: minify-path-config.mjs.gz
+95 B: minify-path-config.mjs.br
+200 B: minify-path-config.umd.js.gz
+155 B: minify-path-config.umd.js.br"
+`;
+
+exports[`fixtures build minify-path-config with microbundle 2`] = `6`;
+
+exports[`fixtures build minify-path-config with microbundle 3`] = `
+"var o={prop1:1,__p2:2};module.exports=function(){return console.log(o.prop1),console.log(o.__p2),o};
+//# sourceMappingURL=minify-path-config.js.map
+"
+`;
+
+exports[`fixtures build minify-path-config with microbundle 4`] = `
+"var o={prop1:1,__p2:2};export default function(){return console.log(o.prop1),console.log(o.__p2),o}
+//# sourceMappingURL=minify-path-config.mjs.map
+"
+`;
+
+exports[`fixtures build minify-path-config with microbundle 5`] = `
+"!function(e,n){\\"object\\"==typeof exports&&\\"undefined\\"!=typeof module?module.exports=n():\\"function\\"==typeof define&&define.amd?define(n):(e=e||self).minifyPathConfig=n()}(this,function(){var e={prop1:1,__p2:2};return function(){return console.log(e.prop1),console.log(e.__p2),e}});
+//# sourceMappingURL=minify-path-config.umd.js.map
+"
+`;
+
+exports[`fixtures build minify-path-parent-dir-with-cwd with microbundle 1`] = `
+"Used script: microbundle
+
+Directory tree:
+
+minify-path-parent-dir
+  dist
+    minify-path-parent-dir.js
+    minify-path-parent-dir.js.map
+    minify-path-parent-dir.mjs
+    minify-path-parent-dir.mjs.map
+    minify-path-parent-dir.umd.js
+    minify-path-parent-dir.umd.js.map
+  index.js
+  package.json
+  two.js
+
+
+Build \\"minifyPathParentDir\\" to dist:
+103 B: minify-path-parent-dir.js.gz
+89 B: minify-path-parent-dir.js.br
+103 B: minify-path-parent-dir.mjs.gz
+95 B: minify-path-parent-dir.mjs.br
+202 B: minify-path-parent-dir.umd.js.gz
+169 B: minify-path-parent-dir.umd.js.br"
+`;
+
+exports[`fixtures build minify-path-parent-dir-with-cwd with microbundle 2`] = `6`;
+
+exports[`fixtures build minify-path-parent-dir-with-cwd with microbundle 3`] = `
+"var o={prop1:1,__p2:2};module.exports=function(){return console.log(o.prop1),console.log(o.__p2),o};
+//# sourceMappingURL=minify-path-parent-dir.js.map
+"
+`;
+
+exports[`fixtures build minify-path-parent-dir-with-cwd with microbundle 4`] = `
+"var o={prop1:1,__p2:2};export default function(){return console.log(o.prop1),console.log(o.__p2),o}
+//# sourceMappingURL=minify-path-parent-dir.mjs.map
+"
+`;
+
+exports[`fixtures build minify-path-parent-dir-with-cwd with microbundle 5`] = `
+"!function(e,n){\\"object\\"==typeof exports&&\\"undefined\\"!=typeof module?module.exports=n():\\"function\\"==typeof define&&define.amd?define(n):(e=e||self).minifyPathParentDir=n()}(this,function(){var e={prop1:1,__p2:2};return function(){return console.log(e.prop1),console.log(e.__p2),e}});
+//# sourceMappingURL=minify-path-parent-dir.umd.js.map
+"
+`;
+
 exports[`fixtures build modern with microbundle 1`] = `
 "Used script: microbundle -f modern
 

test/fixtures/mangle-json-file/mangle.json

@@ -0,0 +1,15 @@
+{
+  "minify": {
+    "mangle": {
+      "properties": {
+        "regex": "^_"
+      }
+    }
+  },
+  "props": {
+    "cname": 6,
+    "props": {
+      "$_prop2": "__p2"
+    }
+  }
+}

test/fixtures/mangle-json-file/package.json

@@ -0,0 +1,3 @@
+{
+  "name": "mangle-json-file"
+}

test/fixtures/mangle-json-file/src/index.js

@@ -0,0 +1,7 @@
+import { two } from './two';
+
+export default function() {
+	console.log(two.prop1);
+	console.log(two._prop2);
+	return two;
+}

test/fixtures/mangle-json-file/src/two.js

@@ -0,0 +1,4 @@
+export const two = {
+	prop1: 1,
+	_prop2: 2,
+};

test/fixtures/minify-config/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "minify-config",
+  "minify": {
+    "mangle": {
+      "properties": {
+        "regex": "^_"
+      }
+    }
+  }
+}

test/fixtures/minify-config/src/index.js

@@ -0,0 +1,7 @@
+import { two } from './two';
+
+export default function() {
+	console.log(two.prop1);
+	console.log(two._prop2);
+	return two;
+}

test/fixtures/minify-config/src/two.js

@@ -0,0 +1,4 @@
+export const two = {
+	prop1: 1,
+	_prop2: 2,
+};

test/fixtures/minify-path-config/minify.json

@@ -0,0 +1,15 @@
+{
+  "minify": {
+    "mangle": {
+      "properties": {
+        "regex": "^_"
+      }
+    }
+  },
+  "props": {
+    "cname": 6,
+    "props": {
+      "$_prop2": "__p2"
+    }
+  }
+}

test/fixtures/minify-path-config/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "minify-path-config",
+  "minify": "./minify.json"
+}

test/fixtures/minify-path-config/src/index.js

@@ -0,0 +1,7 @@
+import { two } from './two';
+
+export default function() {
+	console.log(two.prop1);
+	console.log(two._prop2);
+	return two;
+}

test/fixtures/minify-path-config/src/two.js

@@ -0,0 +1,4 @@
+export const two = {
+	prop1: 1,
+	_prop2: 2,
+};

test/fixtures/minify-path-parent-dir-with-cwd/minify-path-parent-dir/index.js

@@ -0,0 +1,7 @@
+import { two } from './two';
+
+export default function() {
+	console.log(two.prop1);
+	console.log(two._prop2);
+	return two;
+}

test/fixtures/minify-path-parent-dir-with-cwd/minify-path-parent-dir/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "minify-path-parent-dir",
+  "minify": "../minify.json"
+}

test/fixtures/minify-path-parent-dir-with-cwd/minify-path-parent-dir/two.js

@@ -0,0 +1,4 @@
+export const two = {
+	prop1: 1,
+	_prop2: 2,
+};

test/fixtures/minify-path-parent-dir-with-cwd/minify.json

@@ -0,0 +1,15 @@
+{
+  "minify": {
+    "mangle": {
+      "properties": {
+        "regex": "^_"
+      }
+    }
+  },
+  "props": {
+    "cname": 6,
+    "props": {
+      "$_prop2": "__p2"
+    }
+  }
+}

test/fixtures/minify-path-parent-dir-with-cwd/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "minify-path-parent-dir-with-cwd",
+  "scripts": {
+    "build": "microbundle --cwd ./minify-path-parent-dir"
+  }
+}