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feat(commonjs): reimplement dynamic import handling (requires Node 12…
…, no longer supports require.cache) (#1038) BREAKING CHANGES: requires Node 12 No longer supports require.cache
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,144 @@ | ||
| import { getVirtualPathForDynamicRequirePath, normalizePathSlashes } from './utils'; | ||
|
|
||
| const FAILED_REQUIRE_ERROR = `throw new Error('Could not dynamically require "' + path + '". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.');`; | ||
|
|
||
| export function getDynamicRequireModules( | ||
| isDynamicRequireModulesEnabled, | ||
| dynamicRequireModuleSet, | ||
| commonDir, | ||
| ignoreDynamicRequires | ||
| ) { | ||
| if (!isDynamicRequireModulesEnabled) { | ||
| return `export function commonjsRequire(path) { | ||
| ${FAILED_REQUIRE_ERROR} | ||
| }`; | ||
| } | ||
| const dynamicModuleIds = [...dynamicRequireModuleSet]; | ||
| const dynamicModuleImports = dynamicModuleIds | ||
| .map( | ||
| (id, index) => | ||
| `import ${ | ||
| id.endsWith('.json') ? `json${index}` : `{ __require as require${index} }` | ||
| } from ${JSON.stringify(id)};` | ||
| ) | ||
| .join('\n'); | ||
| const dynamicModuleProps = dynamicModuleIds | ||
| .map( | ||
| (id, index) => | ||
| `\t\t${JSON.stringify( | ||
| getVirtualPathForDynamicRequirePath(normalizePathSlashes(id), commonDir) | ||
| )}: ${id.endsWith('.json') ? `function () { return json${index}; }` : `require${index}`}` | ||
| ) | ||
| .join(',\n'); | ||
| return `${dynamicModuleImports} | ||
| var dynamicModules; | ||
| function getDynamicModules() { | ||
| return dynamicModules || (dynamicModules = { | ||
| ${dynamicModuleProps} | ||
| }); | ||
| } | ||
| export function commonjsRequire(path, originalModuleDir) { | ||
| var resolvedPath = commonjsResolveImpl(path, originalModuleDir, true); | ||
| if (resolvedPath !== null) { | ||
| return getDynamicModules()[resolvedPath](); | ||
| } | ||
| ${ignoreDynamicRequires ? 'return require(path);' : FAILED_REQUIRE_ERROR} | ||
| } | ||
| function commonjsResolve (path, originalModuleDir) { | ||
| const resolvedPath = commonjsResolveImpl(path, originalModuleDir); | ||
| if (resolvedPath !== null) { | ||
| return resolvedPath; | ||
| } | ||
| return require.resolve(path); | ||
| } | ||
| commonjsRequire.resolve = commonjsResolve; | ||
| function commonjsResolveImpl (path, originalModuleDir) { | ||
| var shouldTryNodeModules = isPossibleNodeModulesPath(path); | ||
| path = normalize(path); | ||
| var relPath; | ||
| if (path[0] === '/') { | ||
| originalModuleDir = '/'; | ||
| } | ||
| var modules = getDynamicModules(); | ||
| var checkedExtensions = ['', '.js', '.json']; | ||
| while (true) { | ||
| if (!shouldTryNodeModules) { | ||
| relPath = originalModuleDir ? normalize(originalModuleDir + '/' + path) : path; | ||
| } else if (originalModuleDir) { | ||
| relPath = normalize(originalModuleDir + '/node_modules/' + path); | ||
| } else { | ||
| relPath = normalize(join('node_modules', path)); | ||
| } | ||
| if (relPath.endsWith('/..')) { | ||
| break; // Travelled too far up, avoid infinite loop | ||
| } | ||
| for (var extensionIndex = 0; extensionIndex < checkedExtensions.length; extensionIndex++) { | ||
| var resolvedPath = relPath + checkedExtensions[extensionIndex]; | ||
| if (modules[resolvedPath]) { | ||
| return resolvedPath; | ||
| } | ||
| } | ||
| if (!shouldTryNodeModules) break; | ||
| var nextDir = normalize(originalModuleDir + '/..'); | ||
| if (nextDir === originalModuleDir) break; | ||
| originalModuleDir = nextDir; | ||
| } | ||
| return null; | ||
| } | ||
| function isPossibleNodeModulesPath (modulePath) { | ||
| var c0 = modulePath[0]; | ||
| if (c0 === '/' || c0 === '\\\\') return false; | ||
| var c1 = modulePath[1], c2 = modulePath[2]; | ||
| if ((c0 === '.' && (!c1 || c1 === '/' || c1 === '\\\\')) || | ||
| (c0 === '.' && c1 === '.' && (!c2 || c2 === '/' || c2 === '\\\\'))) return false; | ||
| if (c1 === ':' && (c2 === '/' || c2 === '\\\\')) return false; | ||
| return true; | ||
| } | ||
| function normalize (path) { | ||
| path = path.replace(/\\\\/g, '/'); | ||
| var parts = path.split('/'); | ||
| var slashed = parts[0] === ''; | ||
| for (var i = 1; i < parts.length; i++) { | ||
| if (parts[i] === '.' || parts[i] === '') { | ||
| parts.splice(i--, 1); | ||
| } | ||
| } | ||
| for (var i = 1; i < parts.length; i++) { | ||
| if (parts[i] !== '..') continue; | ||
| if (i > 0 && parts[i - 1] !== '..' && parts[i - 1] !== '.') { | ||
| parts.splice(--i, 2); | ||
| i--; | ||
| } | ||
| } | ||
| path = parts.join('/'); | ||
| if (slashed && path[0] !== '/') path = '/' + path; | ||
| else if (path.length === 0) path = '.'; | ||
| return path; | ||
| } | ||
| function join () { | ||
| if (arguments.length === 0) return '.'; | ||
| var joined; | ||
| for (var i = 0; i < arguments.length; ++i) { | ||
| var arg = arguments[i]; | ||
| if (arg.length > 0) { | ||
| if (joined === undefined) | ||
| joined = arg; | ||
| else | ||
| joined += '/' + arg; | ||
| } | ||
| } | ||
| if (joined === undefined) return '.'; | ||
| return joined; | ||
| }`; | ||
| } |
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