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feat(eval): new package
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8 files changed

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‎packages/eval/package.json‎

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{
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"name": "@unrteljs/eval",
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"type": "module",
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"version": "0.0.1",
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"description": "Evaluate modules",
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"author": {
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"name": "UnRTEL.js Team & Contributors",
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"email": "[email protected]",
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"url": "https://github.com/unrteljs"
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},
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"license": "MIT",
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"homepage": "https://github.com/unrteljs/unrtel",
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"repository": {
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"type": "git",
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"url": "git+https://github.com/unrteljs/unrtel.git",
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"directory": "packages/eval"
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},
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"bugs": "https://github.com/unrteljs/unrtel/issues",
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"exports": {
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".": {
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"types": "./dist/index.d.ts",
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"import": "./dist/index.mjs",
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"node": "./dist/node.mjs",
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"browser": "./dist/browser.mjs"
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}
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},
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"files": [
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"README.md",
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"dist",
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"package.json"
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],
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"scripts": {
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"dev": "unbuild",
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"stub": "unbuild",
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"build": "unbuild",
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"typecheck": "tsc --noEmit"
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},
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"dependencies": {
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"error-stack-parser": "^2.1.4",
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"sucrase": "^3.35.0"
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}
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}

‎packages/eval/src/browser.ts‎

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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L5
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import { AsyncFunction } from './utils/helper'
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import { getImportBase } from './utils/import-base'
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import { exportDefaultRegex, exportRegex, importAsRegex, importDefaultRegex, importObjectRegex, importRegex } from './utils/regexp'
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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L7-L9
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const modulesCache = new Map<string, Promise<unknown> | unknown>()
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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L26
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// eslint-disable-next-line no-new-func
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const nativeImport = new Function('a', 'return import(a);')
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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L31-L33
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async function fetchAndImportAnyModuleWithCDNCapabilities(name: string) {
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if (name.endsWith('.json')) {
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const response = await fetch(getImportBase() + name)
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const json = await response.json()
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return { default: json }
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}
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return nativeImport(getImportBase() + name)
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}
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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L27-L37
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// bypass vite interop
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async function dynamicImportAnyModule(name: string): Promise<any> {
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if (modulesCache.has(name))
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return modulesCache.get(name)
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try {
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const module = await fetchAndImportAnyModuleWithCDNCapabilities(name)
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modulesCache.set(name, module)
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return module
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}
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catch (error) {
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console.error(`Failed to import module ${name} from CDN`, error)
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}
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}
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// https://github.com/unocss/unocss/blob/main/packages/shared-docs/src/config.ts
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export async function evaluateAnyModule<T>(configCode: string): Promise<T | undefined> {
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const transformedCode = configCode
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.replace(importObjectRegex, (_match, p1, _p2, p3) => {
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// Replace `as` with `:` within the destructuring assignment
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const transformedP1 = p1.replace(importAsRegex, '$1: $2')
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return `const {${transformedP1}} = await __import("${p3}");`
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})
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.replace(importDefaultRegex, 'const $1 = (await __import("$3")).default;')
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.replace(exportDefaultRegex, 'return ')
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.replace(importRegex, '__import(')
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.replace(exportRegex, 'return function ')
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const wrappedDynamicImport = new AsyncFunction('__import', transformedCode)
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return await wrappedDynamicImport(dynamicImportAnyModule)
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}

‎packages/eval/src/index.ts‎

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export * from './browser'
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export * from './utils/import-base'

‎packages/eval/src/node.ts‎

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// https://github.com/nolebase/obsidian-plugin-vue/blob/main/src/import.ts
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import { createRequire } from 'node:module'
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import { AsyncFunction } from './utils/helper'
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import { getImportBase, setImportBase } from './utils/import-base'
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import { exportDefaultRegex, exportRegex, importAsRegex, importDefaultRegex, importObjectRegex, importRegex } from './utils/regexp'
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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L31-L33
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async function wrappedImport(name: string, basePath?: string) {
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const require = createRequire(basePath ?? import.meta.dirname)
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return require(name)
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}
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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L27-L37
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// bypass vite interop
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async function dynamicImportAnyModule(name: string, basePath?: string): Promise<any> {
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try {
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const module = await wrappedImport(name, basePath)
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if (module && module.__esModule) {
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const finalModule = module['module.exports'] || module
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return finalModule
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}
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return module
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}
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catch (error) {
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console.error(`Failed to import module ${name}`, error)
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}
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}
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// https://github.com/unocss/unocss/blob/main/packages/shared-docs/src/config.ts
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export async function evaluateAnyModule<T>(configCode: string, basePath?: string): Promise<T | undefined> {
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const transformedCode = configCode
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.replace(importObjectRegex, (_match, p1, _p2, p3) => {
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// Replace `as` with `:` within the destructuring assignment
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const transformedP1 = p1.replace(importAsRegex, '$1: $2')
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return `const {${transformedP1}} = await __import("${p3}");`
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})
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.replace(importDefaultRegex, 'const $1 = (await __import("$3")).default;')
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.replace(exportDefaultRegex, 'return ')
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.replace(importRegex, '__import(')
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.replace(exportRegex, 'return function ')
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const wrappedDynamicImport = new AsyncFunction('__import', transformedCode)
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return await wrappedDynamicImport(name => dynamicImportAnyModule(name, basePath))
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}
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export {
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getImportBase,
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setImportBase,
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}

‎packages/eval/src/utils/helper.ts‎

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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L5
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export const AsyncFunction = Object.getPrototypeOf(async () => { }).constructor

‎packages/eval/src/utils/import-base.ts‎

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let importBase = 'https://esm.sh/'
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export function setImportBase(base: string) {
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importBase = base
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}
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export function getImportBase() {
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return importBase
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}

‎packages/eval/src/utils/regexp.ts‎

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// https://github.com/unocss/unocss/blob/6d94efc56b0c966f25f46d8988b3fd30ebc189aa/packages/shared-docs/src/config.ts#L5
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// https://github.com/unocss/unocss/blob/main/packages/shared-docs/src/config.ts
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export const importObjectRegex = /import\s*\{([\s\S]*?)\}\s*from\s*(['"])([\w@/.:-]+)\2/g
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export const importDefaultRegex = /import\s(.*?)\sfrom\s*(['"])([\w@/.:-]+)\2/g
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export const exportDefaultRegex = /export default /
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export const exportRegex = /export\s(.*?)\s/g
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export const importRegex = /\bimport\s*\(/g
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// New regex to handle `as` to `:` transformation
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export const importAsRegex = /(\w+)\s+as\s+(\w+)/g

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