{"version":3,"file":"index.js","sources":["../src/utils.ts","../src/index.ts"],"sourcesContent":["import type { BooleanOrBuildTarget, ModuleName, ModuleNameWithoutNodePrefix } from './index'\n\nexport const compareModuleNames = (moduleA: ModuleName, moduleB: ModuleName) => {\n  return withoutNodeProtocol(moduleA) === withoutNodeProtocol(moduleB)\n}\n\nexport const isEnabled = (value: BooleanOrBuildTarget, mode: 'build' | 'dev') => {\n  if (!value) return false\n  if (value === true) return true\n\n  return value === mode\n}\n\nexport const isNodeProtocolImport = (name: string) => {\n  return name.startsWith('node:')\n}\n\nexport const toRegExp = (text: string) => {\n  // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#escaping\n  const escapedText = text.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\$&')\n\n  return new RegExp(`^${escapedText}$`)\n}\n\nexport const withoutNodeProtocol = (name: ModuleName): ModuleNameWithoutNodePrefix => {\n  return name.replace(/^node:/, '') as ModuleNameWithoutNodePrefix\n}\n","import { createRequire } from 'node:module'\nimport inject from '@rollup/plugin-inject'\nimport stdLibBrowser from 'node-stdlib-browser'\nimport { handleCircularDependancyWarning } from 'node-stdlib-browser/helpers/rollup/plugin'\nimport esbuildPlugin from 'node-stdlib-browser/helpers/esbuild/plugin'\nimport type { Plugin } from 'vite'\nimport { compareModuleNames, isEnabled, isNodeProtocolImport, toRegExp, withoutNodeProtocol } from './utils'\n\nexport type BuildTarget = 'build' | 'dev'\nexport type BooleanOrBuildTarget = boolean | BuildTarget\nexport type ModuleName = keyof typeof stdLibBrowser\nexport type ModuleNameWithoutNodePrefix<T = ModuleName> = T extends `node:${infer P}` ? P : never\n\nexport type PolyfillOptions = {\n  /**\n   * Includes specific modules. If empty, includes all modules\n   * @example\n   *\n   * ```ts\n   * nodePolyfills({\n   *   include: ['fs', 'path'],\n   * })\n   * ```\n  */\n  include?: ModuleNameWithoutNodePrefix[],\n  /**\n   * @example\n   *\n   * ```ts\n   * nodePolyfills({\n   *   exclude: ['fs', 'path'],\n   * })\n   * ```\n   */\n  exclude?: ModuleNameWithoutNodePrefix[],\n  /**\n   * Specify whether specific globals should be polyfilled.\n   *\n   * @example\n   *\n   * ```ts\n   * nodePolyfills({\n   *   globals: {\n   *     Buffer: false,\n   *     global: true,\n   *     process: 'build',\n   *   },\n   * })\n   * ```\n   */\n  globals?: {\n    Buffer?: BooleanOrBuildTarget,\n    global?: BooleanOrBuildTarget,\n    process?: BooleanOrBuildTarget,\n  },\n  /**\n   * Specify alternative modules to use in place of the default polyfills.\n   *\n   * @example\n   *\n   * ```ts\n   * nodePolyfills({\n   *   overrides: {\n   *     fs: 'memfs',\n   *   },\n   * })\n   * ```\n   */\n  overrides?: { [Key in ModuleNameWithoutNodePrefix]?: string },\n  /**\n   * Specify whether the Node protocol version of an import (e.g. `node:buffer`) should be polyfilled too.\n   *\n   * @default true\n   */\n  protocolImports?: boolean,\n}\n\nexport type PolyfillOptionsResolved = {\n  include: ModuleNameWithoutNodePrefix[],\n  exclude: ModuleNameWithoutNodePrefix[],\n  globals: {\n    Buffer: BooleanOrBuildTarget,\n    global: BooleanOrBuildTarget,\n    process: BooleanOrBuildTarget,\n  },\n  overrides: { [Key in ModuleNameWithoutNodePrefix]?: string },\n  protocolImports: boolean,\n}\n\nconst globalShimsBanner = [\n  `import __buffer_polyfill from 'vite-plugin-node-polyfills/shims/buffer'`,\n  `import __global_polyfill from 'vite-plugin-node-polyfills/shims/global'`,\n  `import __process_polyfill from 'vite-plugin-node-polyfills/shims/process'`,\n  ``,\n  `globalThis.Buffer = globalThis.Buffer || __buffer_polyfill`,\n  `globalThis.global = globalThis.global || __global_polyfill`,\n  `globalThis.process = globalThis.process || __process_polyfill`,\n  ``,\n].join('\\n')\n\n/**\n * Returns a Vite plugin to polyfill Node's Core Modules for browser environments. Supports `node:` protocol imports.\n *\n * @example\n *\n * ```ts\n * // vite.config.ts\n * import { defineConfig } from 'vite'\n * import { nodePolyfills } from 'vite-plugin-node-polyfills'\n *\n * export default defineConfig({\n *   plugins: [\n *     nodePolyfills({\n *       // Specific modules that should not be polyfilled.\n *       exclude: [],\n *       // Whether to polyfill specific globals.\n *       globals: {\n *         Buffer: true, // can also be 'build', 'dev', or false\n *         global: true,\n *         process: true,\n *       },\n *       // Whether to polyfill `node:` protocol imports.\n *       protocolImports: true,\n *     }),\n *   ],\n * })\n * ```\n */\nexport const nodePolyfills = (options: PolyfillOptions = {}): Plugin => {\n  const require = createRequire(import.meta.url)\n  const globalShimPaths = [\n    require.resolve('vite-plugin-node-polyfills/shims/buffer'),\n    require.resolve('vite-plugin-node-polyfills/shims/global'),\n    require.resolve('vite-plugin-node-polyfills/shims/process'),\n  ]\n  const optionsResolved: PolyfillOptionsResolved = {\n    include: [],\n    exclude: [],\n    overrides: {},\n    protocolImports: true,\n    ...options,\n    globals: {\n      Buffer: true,\n      global: true,\n      process: true,\n      ...options.globals,\n    },\n  }\n\n  const isExcluded = (moduleName: ModuleName) => {\n    if (optionsResolved.include.length > 0) {\n      return !optionsResolved.include.some((includedName) => compareModuleNames(moduleName, includedName))\n    }\n\n    return optionsResolved.exclude.some((excludedName) => compareModuleNames(moduleName, excludedName))\n  }\n\n  const toOverride = (name: ModuleNameWithoutNodePrefix): string | void => {\n    if (isEnabled(optionsResolved.globals.Buffer, 'dev') && /^buffer$/.test(name)) {\n      return 'vite-plugin-node-polyfills/shims/buffer'\n    }\n\n    if (isEnabled(optionsResolved.globals.global, 'dev') && /^global$/.test(name)) {\n      return 'vite-plugin-node-polyfills/shims/global'\n    }\n\n    if (isEnabled(optionsResolved.globals.process, 'dev') && /^process$/.test(name)) {\n      return 'vite-plugin-node-polyfills/shims/process'\n    }\n\n    if (name in optionsResolved.overrides) {\n      return optionsResolved.overrides[name]\n    }\n  }\n\n  const polyfills = (Object.entries(stdLibBrowser) as Array<[ModuleName, string]>).reduce<Record<ModuleName, string>>((included, [name, value]) => {\n    if (!optionsResolved.protocolImports) {\n      if (isNodeProtocolImport(name)) {\n        return included\n      }\n    }\n\n    if (!isExcluded(name)) {\n      included[name] = toOverride(withoutNodeProtocol(name)) || value\n    }\n\n    return included\n  }, {} as Record<ModuleName, string>)\n\n  return {\n    name: 'vite-plugin-node-polyfills',\n    config: (config, env) => {\n      const isDev = env.command === 'serve'\n\n      return {\n        build: {\n          rollupOptions: {\n            onwarn: (warning, rollupWarn) => {\n              handleCircularDependancyWarning(warning, () => {\n                if (config.build?.rollupOptions?.onwarn) {\n                  return config.build.rollupOptions.onwarn(warning, rollupWarn)\n                }\n\n                rollupWarn(warning)\n              })\n            },\n            plugins: [\n              {\n                ...inject({\n                  // https://github.com/niksy/node-stdlib-browser/blob/3e7cd7f3d115ac5c4593b550e7d8c4a82a0d4ac4/README.md#vite\n                  ...(isEnabled(optionsResolved.globals.Buffer, 'build') ? { Buffer: 'vite-plugin-node-polyfills/shims/buffer' } : {}),\n                  ...(isEnabled(optionsResolved.globals.global, 'build') ? { global: 'vite-plugin-node-polyfills/shims/global' } : {}),\n                  ...(isEnabled(optionsResolved.globals.process, 'build') ? { process: 'vite-plugin-node-polyfills/shims/process' } : {}),\n                }),\n              },\n            ],\n          },\n        },\n        esbuild: {\n          // In dev, the global polyfills need to be injected as a banner in order for isolated scripts (such as Vue SFCs) to have access to them.\n          banner: isDev ? globalShimsBanner : undefined,\n        },\n        optimizeDeps: {\n          exclude: [\n            ...globalShimPaths,\n          ],\n          esbuildOptions: {\n            banner: isDev ? { js: globalShimsBanner } : undefined,\n            // https://github.com/niksy/node-stdlib-browser/blob/3e7cd7f3d115ac5c4593b550e7d8c4a82a0d4ac4/README.md?plain=1#L203-L209\n            define: {\n              ...((isDev && isEnabled(optionsResolved.globals.Buffer, 'dev')) ? { Buffer: 'Buffer' } : {}),\n              ...((isDev && isEnabled(optionsResolved.globals.global, 'dev')) ? { global: 'global' } : {}),\n              ...((isDev && isEnabled(optionsResolved.globals.process, 'dev')) ? { process: 'process' } : {}),\n            },\n            inject: [\n              ...globalShimPaths,\n            ],\n            plugins: [\n              esbuildPlugin(polyfills),\n              // Supress the 'injected path \"...\" cannot be marked as external' error in Vite 4 (emitted by esbuild).\n              // https://github.com/evanw/esbuild/blob/edede3c49ad6adddc6ea5b3c78c6ea7507e03020/internal/bundler/bundler.go#L1469\n              {\n                name: 'vite-plugin-node-polyfills-shims-resolver',\n                setup(build) {\n                  for (const globalShimPath of globalShimPaths) {\n                    const globalShimsFilter = toRegExp(globalShimPath)\n\n                    // https://esbuild.github.io/plugins/#on-resolve\n                    build.onResolve({ filter: globalShimsFilter }, () => {\n                      return {\n                        // https://github.com/evanw/esbuild/blob/edede3c49ad6adddc6ea5b3c78c6ea7507e03020/internal/bundler/bundler.go#L1468\n                        external: false,\n                        path: globalShimPath,\n                      }\n                    })\n                  }\n                },\n              },\n            ],\n          },\n        },\n        resolve: {\n          // https://github.com/niksy/node-stdlib-browser/blob/3e7cd7f3d115ac5c4593b550e7d8c4a82a0d4ac4/README.md?plain=1#L150\n          alias: {\n            ...polyfills,\n          },\n        },\n      }\n    },\n  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