1 files changed, 190 insertions, 0 deletions
diff --git a/packages/webapi/run/build.js b/packages/webapi/run/build.js
new file mode 100644
index 000000000..dd7687392
--- /dev/null
+++ b/packages/webapi/run/build.js
@@ -0,0 +1,190 @@
+import { rollup } from 'rollup'
+import { nodeResolve } from '@rollup/plugin-node-resolve'
+import { posix as path } from 'node:path'
+import { createRequire } from 'node:module'
+import { readFile as nodeReadFile, rename, rm, writeFile } from 'node:fs/promises'
+import { default as MagicString } from 'magic-string'
+import { default as alias } from '@rollup/plugin-alias'
+import { default as inject } from '@rollup/plugin-inject'
+import { default as typescript } from '@rollup/plugin-typescript'
+
+const readFileCache = Object.create(null)
+const require = createRequire(import.meta.url)
+
+const readFile = (/** @type {string} */ id) => readFileCache[id] || (readFileCache[id] = nodeReadFile(id, 'utf8'))
+
+const pathToDOMException = path.resolve('src', 'lib', 'DOMException.js')
+const pathToEventTargetShim = path.join('..', '..', 'node_modules', 'event-target-shim', 'index.mjs')
+const pathToStructuredClone = path.join('..', '..', 'node_modules', '@ungap', 'structured-clone', 'esm', 'index.js')
+
+const plugins = [
+	typescript({
+		tsconfig: './tsconfig.json',
+	}),
+	alias({
+		entries: [
+			{ find: '@ungap/structured-clone', replacement: pathToStructuredClone },
+			{ find: 'event-target-shim', replacement: pathToEventTargetShim },
+			{ find: 'event-target-shim/dist/event-target-shim.js', replacement: pathToEventTargetShim },
+			{ find: 'event-target-shim/dist/event-target-shim.umd.js', replacement: pathToEventTargetShim },
+			{ find: 'node-domexception', replacement: pathToDOMException },
+		],
+	}),
+	nodeResolve({
+		dedupe: [
+			'net',
+			'node:net'
+		]
+	}),
+	inject({
+		// import { Promise as P } from 'es6-promise'
+		// P: [ 'es6-promise', 'Promise' ],
+
+		'AbortController': [ 'abort-controller/dist/abort-controller.mjs', 'AbortController' ],
+		'Blob': [ 'fetch-blob/from.js', 'Blob' ],
+		'DOMException': [pathToDOMException, 'DOMException'],
+		'Document': [ './Document', 'Document' ],
+		'Element': [ './Element', 'Element' ],
+		'Event': [ 'event-target-shim', 'Event' ],
+		'EventTarget': [ 'event-target-shim', 'EventTarget' ],
+		'defineEventAttribute': [ 'event-target-shim', 'defineEventAttribute' ],
+		'HTMLElement': ['./Element', 'HTMLElement'],
+		'HTMLImageElement': ['./Element', 'HTMLImageElement'],
+		'HTMLUnknownElement': ['./Element', 'HTMLUnknownElement'],
+		'MediaQueryList': [ './MediaQueryList', 'MediaQueryList' ],
+		'Node': [ './Node', 'Node' ],
+		'ReadableStream': [ 'web-streams-polyfill/dist/ponyfill.es6.mjs', 'ReadableStream' ],
+		'ShadowRoot': [ './Node', 'ShadowRoot' ],
+		'Window': [ './Window', 'Window' ],
+		'globalThis.ReadableStream': [ 'web-streams-polyfill/dist/ponyfill.es6.mjs', 'ReadableStream' ],
+	}),
+	{
+		async load(id) {
+			const pathToEsm = id
+			const pathToMap = `${pathToEsm}.map`
+
+			const code = await readFile(pathToEsm, 'utf8')
+
+			const indexes = []
+
+			const replacements = [
+				// remove unused imports
+				[ /(^|\n)import\s+[^']+'node:(buffer|fs|path|worker_threads)'/g, `` ],
+				[ /const \{ stat \} = fs/g, `` ],
+
+				// remove unused polyfill utils
+				[ /\nif \(\s*typeof Global[\W\w]+?\n\}/g, `` ],
+				[ /\nif \(\s*typeof window[\W\w]+?\n\}/g, `` ],
+				[ /\nif \(!globalThis\.ReadableStream\) \{[\W\w]+?\n\}/g, `` ],
+				[ /\nif \(typeof SymbolPolyfill[\W\w]+?\n\}/g, `` ],
+
+				// remove unused polyfills
+				[ /\nconst globals = getGlobals\(\);/g, `` ],
+				[ /\nconst queueMicrotask = [\W\w]+?\n\}\)\(\);/g, ``],
+				[ /\nconst NativeDOMException =[^;]+;/g, `` ],
+				[ /\nconst SymbolPolyfill\s*=[^;]+;/g, '\nconst SymbolPolyfill = Symbol;'],
+				[ /\n(const|let) DOMException[^;]*;/g, `let DOMException$1=DOMException` ],
+				[ /\nconst DOMException = globalThis.DOMException[\W\w]+?\}\)\(\)/g, `` ],
+				[ /\nimport DOMException from 'node-domexception'/g, `` ],
+
+				// use shared AbortController methods
+				[ / new DOMException\$1/g, `new DOMException` ],
+				[ / from 'net'/g, `from 'node:net'` ],
+				[ / throw createInvalidStateError/g, `throw new DOMException` ],
+				[ /= createAbortController/g, `= new AbortController` ],
+				[ /\nconst queueMicrotask = [\W\w]+?\n\}\)\(\)\;/g, `` ],
+
+				// remove Body.prototype.buffer deprecation notice
+				[ /\nBody\.prototype\.buffer[^\n]+/g, `` ],
+
+				// remove Body.prototype.data deprecation notice
+				[ /\n	data: \{get: deprecate[\W\w]+?\)\}/g, `` ],
+			]
+
+			for (const [replacee, replacer] of replacements) {
+				replacee.index = 0
+
+				let replaced = null
+
+				while ((replaced = replacee.exec(code)) !== null) {
+					const leadIndex = replaced.index
+					const tailIndex = replaced.index + replaced[0].length
+
+					indexes.unshift([ leadIndex, tailIndex, replacer ])
+				}
+			}
+
+			if (indexes.length) {
+				const magicString = new MagicString(code)
+
+				indexes.sort(
+					([leadOfA], [leadOfB]) => leadOfA - leadOfB
+				)
+
+				for (const [leadIndex, tailindex, replacer] of indexes) {
+					magicString.overwrite(leadIndex, tailindex, replacer)
+				}
+
+				const magicMap = magicString.generateMap({ source: pathToEsm, file: pathToMap, includeContent: true })
+
+				const modifiedEsm = magicString.toString()
+				const modifiedMap = magicMap.toString()
+
+				return { code: modifiedEsm, map: modifiedMap }
+			}
+		},
+	},
+]
+
+async function build() {
+	const configs = [
+		{
+			inputOptions: {
+				input: 'src/polyfill.ts',
+				plugins: plugins,
+				onwarn(warning, warn) {
+					if (warning.code !== 'UNRESOLVED_IMPORT') warn(warning)
+				},
+			},
+			outputOptions: {
+				inlineDynamicImports: true,
+				file: 'mod.js',
+				format: 'esm',
+				sourcemap: true,
+			},
+		},
+	]
+
+	for (const config of configs) {
+		const bundle = await rollup(config.inputOptions)
+
+		// or write the bundle to disk
+		await bundle.write(config.outputOptions)
+
+		// closes the bundle
+		await bundle.close()
+
+		// delete the lib directory
+		await rm('lib', { force: true, recursive: true })
+		await rm('exclusions.d.ts', { force: true, recursive: true })
+		await rm('exclusions.d.ts.map', { force: true, recursive: true })
+		await rm('inheritence.d.ts', { force: true, recursive: true })
+		await rm('inheritence.d.ts.map', { force: true, recursive: true })
+		await rm('polyfill.d.ts.map', { force: true, recursive: true })
+		await rm('polyfill.js.map', { force: true, recursive: true })
+		await rm('polyfill.js', { force: true, recursive: true })
+		await rm('ponyfill.d.ts', { force: true, recursive: true })
+		await rm('ponyfill.d.ts.map', { force: true, recursive: true })
+		await rm('ponyfill.js.map', { force: true, recursive: true })
+		await rm('ponyfill.js', { force: true, recursive: true })
+
+		await rename('polyfill.d.ts', 'mod.d.ts')
+
+		const modDTS = await readFile('./mod.d.ts')
+
+		writeFile('mod.d.ts', modDTS.replace('\n//# sourceMappingURL=polyfill.d.ts.map', '').replace('ponyfill.js', 'mod.js'))
+		writeFile('apply.js', `import { polyfill } from './mod.js'\n\nexport * from './mod.js'\n\npolyfill(globalThis)\n`)
+	}
+}
+
+build()