mirror of
https://github.com/microsoft/TypeScript.git
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593 lines
30 KiB
TypeScript
593 lines
30 KiB
TypeScript
// Used by importFixes, getEditsForFileRename, and declaration emit to synthesize import module specifiers.
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/* @internal */
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namespace ts.moduleSpecifiers {
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const enum RelativePreference { Relative, NonRelative, Auto }
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// See UserPreferences#importPathEnding
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const enum Ending { Minimal, Index, JsExtension }
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// Processed preferences
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interface Preferences {
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readonly relativePreference: RelativePreference;
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readonly ending: Ending;
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}
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function getPreferences({ importModuleSpecifierPreference, importModuleSpecifierEnding }: UserPreferences, compilerOptions: CompilerOptions, importingSourceFile: SourceFile): Preferences {
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return {
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relativePreference: importModuleSpecifierPreference === "relative" ? RelativePreference.Relative : importModuleSpecifierPreference === "non-relative" ? RelativePreference.NonRelative : RelativePreference.Auto,
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ending: getEnding(),
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};
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function getEnding(): Ending {
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switch (importModuleSpecifierEnding) {
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case "minimal": return Ending.Minimal;
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case "index": return Ending.Index;
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case "js": return Ending.JsExtension;
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default: return usesJsExtensionOnImports(importingSourceFile) ? Ending.JsExtension
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: getEmitModuleResolutionKind(compilerOptions) !== ModuleResolutionKind.NodeJs ? Ending.Index : Ending.Minimal;
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}
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}
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}
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function getPreferencesForUpdate(compilerOptions: CompilerOptions, oldImportSpecifier: string): Preferences {
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return {
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relativePreference: isExternalModuleNameRelative(oldImportSpecifier) ? RelativePreference.Relative : RelativePreference.NonRelative,
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ending: hasJSFileExtension(oldImportSpecifier) ?
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Ending.JsExtension :
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getEmitModuleResolutionKind(compilerOptions) !== ModuleResolutionKind.NodeJs || endsWith(oldImportSpecifier, "index") ? Ending.Index : Ending.Minimal,
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};
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}
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export function updateModuleSpecifier(
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compilerOptions: CompilerOptions,
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importingSourceFileName: Path,
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toFileName: string,
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host: ModuleSpecifierResolutionHost,
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oldImportSpecifier: string,
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): string | undefined {
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const res = getModuleSpecifierWorker(compilerOptions, importingSourceFileName, toFileName, host, getPreferencesForUpdate(compilerOptions, oldImportSpecifier));
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if (res === oldImportSpecifier) return undefined;
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return res;
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}
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// Note: importingSourceFile is just for usesJsExtensionOnImports
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export function getModuleSpecifier(
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compilerOptions: CompilerOptions,
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importingSourceFile: SourceFile,
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importingSourceFileName: Path,
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toFileName: string,
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host: ModuleSpecifierResolutionHost,
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preferences: UserPreferences = {},
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): string {
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return getModuleSpecifierWorker(compilerOptions, importingSourceFileName, toFileName, host, getPreferences(preferences, compilerOptions, importingSourceFile));
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}
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export function getNodeModulesPackageName(
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compilerOptions: CompilerOptions,
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importingSourceFileName: Path,
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nodeModulesFileName: string,
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host: ModuleSpecifierResolutionHost,
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): string | undefined {
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const info = getInfo(importingSourceFileName, host);
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const modulePaths = getAllModulePaths(importingSourceFileName, nodeModulesFileName, host);
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return firstDefined(modulePaths,
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modulePath => tryGetModuleNameAsNodeModule(modulePath, info, host, compilerOptions, /*packageNameOnly*/ true));
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}
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function getModuleSpecifierWorker(
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compilerOptions: CompilerOptions,
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importingSourceFileName: Path,
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toFileName: string,
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host: ModuleSpecifierResolutionHost,
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preferences: Preferences
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): string {
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const info = getInfo(importingSourceFileName, host);
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const modulePaths = getAllModulePaths(importingSourceFileName, toFileName, host);
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return firstDefined(modulePaths, modulePath => tryGetModuleNameAsNodeModule(modulePath, info, host, compilerOptions)) ||
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getLocalModuleSpecifier(toFileName, info, compilerOptions, host, preferences);
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}
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/** Returns an import for each symlink and for the realpath. */
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export function getModuleSpecifiers(
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moduleSymbol: Symbol,
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compilerOptions: CompilerOptions,
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importingSourceFile: SourceFile,
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host: ModuleSpecifierResolutionHost,
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userPreferences: UserPreferences,
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): readonly string[] {
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const ambient = tryGetModuleNameFromAmbientModule(moduleSymbol);
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if (ambient) return [ambient];
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const info = getInfo(importingSourceFile.path, host);
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const moduleSourceFile = getSourceFileOfNode(moduleSymbol.valueDeclaration || getNonAugmentationDeclaration(moduleSymbol));
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const modulePaths = getAllModulePaths(importingSourceFile.path, moduleSourceFile.originalFileName, host);
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const preferences = getPreferences(userPreferences, compilerOptions, importingSourceFile);
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const importedFileIsInNodeModules = some(modulePaths, p => p.isInNodeModules);
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// Module specifier priority:
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// 1. "Bare package specifiers" (e.g. "@foo/bar") resulting from a path through node_modules to a package.json's "types" entry
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// 2. Specifiers generated using "paths" from tsconfig
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// 3. Non-relative specfiers resulting from a path through node_modules (e.g. "@foo/bar/path/to/file")
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// 4. Relative paths
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let nodeModulesSpecifiers: string[] | undefined;
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let pathsSpecifiers: string[] | undefined;
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let relativeSpecifiers: string[] | undefined;
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for (const modulePath of modulePaths) {
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const specifier = tryGetModuleNameAsNodeModule(modulePath, info, host, compilerOptions);
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nodeModulesSpecifiers = append(nodeModulesSpecifiers, specifier);
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if (specifier && modulePath.isRedirect) {
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// If we got a specifier for a redirect, it was a bare package specifier (e.g. "@foo/bar",
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// not "@foo/bar/path/to/file"). No other specifier will be this good, so stop looking.
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return nodeModulesSpecifiers!;
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}
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if (!specifier && !modulePath.isRedirect) {
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const local = getLocalModuleSpecifier(modulePath.path, info, compilerOptions, host, preferences);
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if (pathIsBareSpecifier(local)) {
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pathsSpecifiers = append(pathsSpecifiers, local);
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}
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else if (!importedFileIsInNodeModules || modulePath.isInNodeModules) {
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// Why this extra conditional, not just an `else`? If some path to the file contained
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// 'node_modules', but we can't create a non-relative specifier (e.g. "@foo/bar/path/to/file"),
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// that means we had to go through a *sibling's* node_modules, not one we can access directly.
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// If some path to the file was in node_modules but another was not, this likely indicates that
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// we have a monorepo structure with symlinks. In this case, the non-node_modules path is
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// probably the realpath, e.g. "../bar/path/to/file", but a relative path to another package
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// in a monorepo is probably not portable. So, the module specifier we actually go with will be
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// the relative path through node_modules, so that the declaration emitter can produce a
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// portability error. (See declarationEmitReexportedSymlinkReference3)
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relativeSpecifiers = append(relativeSpecifiers, local);
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}
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}
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}
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return pathsSpecifiers?.length ? pathsSpecifiers :
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nodeModulesSpecifiers?.length ? nodeModulesSpecifiers :
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Debug.checkDefined(relativeSpecifiers);
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}
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interface Info {
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readonly getCanonicalFileName: GetCanonicalFileName;
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readonly sourceDirectory: Path;
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}
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// importingSourceFileName is separate because getEditsForFileRename may need to specify an updated path
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function getInfo(importingSourceFileName: Path, host: ModuleSpecifierResolutionHost): Info {
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const getCanonicalFileName = createGetCanonicalFileName(host.useCaseSensitiveFileNames ? host.useCaseSensitiveFileNames() : true);
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const sourceDirectory = getDirectoryPath(importingSourceFileName);
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return { getCanonicalFileName, sourceDirectory };
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}
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function getLocalModuleSpecifier(moduleFileName: string, { getCanonicalFileName, sourceDirectory }: Info, compilerOptions: CompilerOptions, host: ModuleSpecifierResolutionHost, { ending, relativePreference }: Preferences): string {
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const { baseUrl, paths, rootDirs, bundledPackageName } = compilerOptions;
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const relativePath = rootDirs && tryGetModuleNameFromRootDirs(rootDirs, moduleFileName, sourceDirectory, getCanonicalFileName, ending, compilerOptions) ||
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removeExtensionAndIndexPostFix(ensurePathIsNonModuleName(getRelativePathFromDirectory(sourceDirectory, moduleFileName, getCanonicalFileName)), ending, compilerOptions);
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if (!baseUrl && !paths || relativePreference === RelativePreference.Relative) {
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return relativePath;
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}
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const baseDirectory = getPathsBasePath(compilerOptions, host) || baseUrl!;
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const relativeToBaseUrl = getRelativePathIfInDirectory(moduleFileName, baseDirectory, getCanonicalFileName);
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if (!relativeToBaseUrl) {
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return relativePath;
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}
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const bundledPkgReference = bundledPackageName ? combinePaths(bundledPackageName, relativeToBaseUrl) : relativeToBaseUrl;
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const importRelativeToBaseUrl = removeExtensionAndIndexPostFix(bundledPkgReference, ending, compilerOptions);
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const fromPaths = paths && tryGetModuleNameFromPaths(removeFileExtension(bundledPkgReference), importRelativeToBaseUrl, paths);
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const nonRelative = fromPaths === undefined && baseUrl !== undefined ? importRelativeToBaseUrl : fromPaths;
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if (!nonRelative) {
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return relativePath;
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}
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if (relativePreference === RelativePreference.NonRelative) {
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return nonRelative;
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}
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if (relativePreference !== RelativePreference.Auto) Debug.assertNever(relativePreference);
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// Prefer a relative import over a baseUrl import if it has fewer components.
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return isPathRelativeToParent(nonRelative) || countPathComponents(relativePath) < countPathComponents(nonRelative) ? relativePath : nonRelative;
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}
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export function countPathComponents(path: string): number {
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let count = 0;
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for (let i = startsWith(path, "./") ? 2 : 0; i < path.length; i++) {
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if (path.charCodeAt(i) === CharacterCodes.slash) count++;
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}
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return count;
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}
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function usesJsExtensionOnImports({ imports }: SourceFile): boolean {
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return firstDefined(imports, ({ text }) => pathIsRelative(text) ? hasJSFileExtension(text) : undefined) || false;
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}
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function numberOfDirectorySeparators(str: string) {
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const match = str.match(/\//g);
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return match ? match.length : 0;
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}
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function comparePathsByRedirectAndNumberOfDirectorySeparators(a: ModulePath, b: ModulePath) {
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return compareBooleans(b.isRedirect, a.isRedirect) || compareValues(
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numberOfDirectorySeparators(a.path),
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numberOfDirectorySeparators(b.path)
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);
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}
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export function forEachFileNameOfModule<T>(
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importingFileName: string,
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importedFileName: string,
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host: ModuleSpecifierResolutionHost,
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preferSymlinks: boolean,
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cb: (fileName: string, isRedirect: boolean) => T | undefined
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): T | undefined {
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const getCanonicalFileName = hostGetCanonicalFileName(host);
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const cwd = host.getCurrentDirectory();
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const referenceRedirect = host.isSourceOfProjectReferenceRedirect(importedFileName) ? host.getProjectReferenceRedirect(importedFileName) : undefined;
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const redirects = host.redirectTargetsMap.get(toPath(importedFileName, cwd, getCanonicalFileName)) || emptyArray;
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const importedFileNames = [...(referenceRedirect ? [referenceRedirect] : emptyArray), importedFileName, ...redirects];
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const targets = importedFileNames.map(f => getNormalizedAbsolutePath(f, cwd));
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if (!preferSymlinks) {
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const result = forEach(targets, p => cb(p, referenceRedirect === p));
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if (result) return result;
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}
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const links = host.getSymlinkCache
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? host.getSymlinkCache()
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: discoverProbableSymlinks(host.getSourceFiles(), getCanonicalFileName, cwd);
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const symlinkedDirectories = links.getSymlinkedDirectories();
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const useCaseSensitiveFileNames = !host.useCaseSensitiveFileNames || host.useCaseSensitiveFileNames();
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const result = symlinkedDirectories && forEachEntry(symlinkedDirectories, (resolved, path) => {
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if (resolved === false) return undefined;
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if (startsWithDirectory(importingFileName, resolved.realPath, getCanonicalFileName)) {
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return undefined; // Don't want to a package to globally import from itself
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}
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return forEach(targets, target => {
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if (!containsPath(resolved.real, target, !useCaseSensitiveFileNames)) {
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return;
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}
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const relative = getRelativePathFromDirectory(resolved.real, target, getCanonicalFileName);
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const option = resolvePath(path, relative);
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if (!host.fileExists || host.fileExists(option)) {
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const result = cb(option, target === referenceRedirect);
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if (result) return result;
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}
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});
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});
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return result ||
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(preferSymlinks ? forEach(targets, p => cb(p, p === referenceRedirect)) : undefined);
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}
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interface ModulePath {
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path: string;
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isInNodeModules: boolean;
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isRedirect: boolean;
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}
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/**
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* Looks for existing imports that use symlinks to this module.
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* Symlinks will be returned first so they are preferred over the real path.
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*/
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function getAllModulePaths(importingFileName: string, importedFileName: string, host: ModuleSpecifierResolutionHost): readonly ModulePath[] {
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const cwd = host.getCurrentDirectory();
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const getCanonicalFileName = hostGetCanonicalFileName(host);
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const allFileNames = new Map<string, { path: string, isRedirect: boolean, isInNodeModules: boolean }>();
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let importedFileFromNodeModules = false;
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forEachFileNameOfModule(
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importingFileName,
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importedFileName,
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host,
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/*preferSymlinks*/ true,
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(path, isRedirect) => {
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const isInNodeModules = pathContainsNodeModules(path);
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allFileNames.set(path, { path: getCanonicalFileName(path), isRedirect, isInNodeModules });
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importedFileFromNodeModules = importedFileFromNodeModules || isInNodeModules;
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// don't return value, so we collect everything
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}
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);
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// Sort by paths closest to importing file Name directory
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const sortedPaths: ModulePath[] = [];
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for (
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let directory = getDirectoryPath(toPath(importingFileName, cwd, getCanonicalFileName));
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allFileNames.size !== 0;
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) {
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const directoryStart = ensureTrailingDirectorySeparator(directory);
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let pathsInDirectory: ModulePath[] | undefined;
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allFileNames.forEach(({ path, isRedirect, isInNodeModules }, fileName) => {
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if (startsWith(path, directoryStart)) {
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(pathsInDirectory ||= []).push({ path: fileName, isRedirect, isInNodeModules });
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allFileNames.delete(fileName);
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}
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});
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if (pathsInDirectory) {
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if (pathsInDirectory.length > 1) {
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pathsInDirectory.sort(comparePathsByRedirectAndNumberOfDirectorySeparators);
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}
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sortedPaths.push(...pathsInDirectory);
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}
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const newDirectory = getDirectoryPath(directory);
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if (newDirectory === directory) break;
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directory = newDirectory;
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}
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if (allFileNames.size) {
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const remainingPaths = arrayFrom(allFileNames.values());
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if (remainingPaths.length > 1) remainingPaths.sort(comparePathsByRedirectAndNumberOfDirectorySeparators);
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sortedPaths.push(...remainingPaths);
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}
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return sortedPaths;
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}
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function tryGetModuleNameFromAmbientModule(moduleSymbol: Symbol): string | undefined {
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const decl = find(moduleSymbol.declarations,
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d => isNonGlobalAmbientModule(d) && (!isExternalModuleAugmentation(d) || !isExternalModuleNameRelative(getTextOfIdentifierOrLiteral(d.name)))
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) as (ModuleDeclaration & { name: StringLiteral }) | undefined;
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if (decl) {
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return decl.name.text;
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}
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}
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function tryGetModuleNameFromPaths(relativeToBaseUrlWithIndex: string, relativeToBaseUrl: string, paths: MapLike<readonly string[]>): string | undefined {
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for (const key in paths) {
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for (const patternText of paths[key]) {
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const pattern = removeFileExtension(normalizePath(patternText));
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const indexOfStar = pattern.indexOf("*");
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if (indexOfStar !== -1) {
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const prefix = pattern.substr(0, indexOfStar);
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const suffix = pattern.substr(indexOfStar + 1);
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if (relativeToBaseUrl.length >= prefix.length + suffix.length &&
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startsWith(relativeToBaseUrl, prefix) &&
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endsWith(relativeToBaseUrl, suffix) ||
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!suffix && relativeToBaseUrl === removeTrailingDirectorySeparator(prefix)) {
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const matchedStar = relativeToBaseUrl.substr(prefix.length, relativeToBaseUrl.length - suffix.length);
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return key.replace("*", matchedStar);
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}
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}
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else if (pattern === relativeToBaseUrl || pattern === relativeToBaseUrlWithIndex) {
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return key;
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}
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}
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}
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}
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function tryGetModuleNameFromRootDirs(rootDirs: readonly string[], moduleFileName: string, sourceDirectory: string, getCanonicalFileName: (file: string) => string, ending: Ending, compilerOptions: CompilerOptions): string | undefined {
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const normalizedTargetPath = getPathRelativeToRootDirs(moduleFileName, rootDirs, getCanonicalFileName);
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if (normalizedTargetPath === undefined) {
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return undefined;
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}
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const normalizedSourcePath = getPathRelativeToRootDirs(sourceDirectory, rootDirs, getCanonicalFileName);
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const relativePath = normalizedSourcePath !== undefined ? ensurePathIsNonModuleName(getRelativePathFromDirectory(normalizedSourcePath, normalizedTargetPath, getCanonicalFileName)) : normalizedTargetPath;
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return getEmitModuleResolutionKind(compilerOptions) === ModuleResolutionKind.NodeJs
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? removeExtensionAndIndexPostFix(relativePath, ending, compilerOptions)
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: removeFileExtension(relativePath);
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}
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function tryGetModuleNameAsNodeModule({ path, isRedirect }: ModulePath, { getCanonicalFileName, sourceDirectory }: Info, host: ModuleSpecifierResolutionHost, options: CompilerOptions, packageNameOnly?: boolean): string | undefined {
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if (!host.fileExists || !host.readFile) {
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return undefined;
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}
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const parts: NodeModulePathParts = getNodeModulePathParts(path)!;
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if (!parts) {
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return undefined;
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}
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// Simplify the full file path to something that can be resolved by Node.
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let moduleSpecifier = path;
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let isPackageRootPath = false;
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if (!packageNameOnly) {
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let packageRootIndex = parts.packageRootIndex;
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let moduleFileNameForExtensionless: string | undefined;
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while (true) {
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// If the module could be imported by a directory name, use that directory's name
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const { moduleFileToTry, packageRootPath } = tryDirectoryWithPackageJson(packageRootIndex);
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if (packageRootPath) {
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moduleSpecifier = packageRootPath;
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isPackageRootPath = true;
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break;
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}
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if (!moduleFileNameForExtensionless) moduleFileNameForExtensionless = moduleFileToTry;
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// try with next level of directory
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packageRootIndex = path.indexOf(directorySeparator, packageRootIndex + 1);
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if (packageRootIndex === -1) {
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moduleSpecifier = getExtensionlessFileName(moduleFileNameForExtensionless);
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break;
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}
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}
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}
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if (isRedirect && !isPackageRootPath) {
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return undefined;
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}
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const globalTypingsCacheLocation = host.getGlobalTypingsCacheLocation && host.getGlobalTypingsCacheLocation();
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// Get a path that's relative to node_modules or the importing file's path
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// if node_modules folder is in this folder or any of its parent folders, no need to keep it.
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const pathToTopLevelNodeModules = getCanonicalFileName(moduleSpecifier.substring(0, parts.topLevelNodeModulesIndex));
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if (!(startsWith(sourceDirectory, pathToTopLevelNodeModules) || globalTypingsCacheLocation && startsWith(getCanonicalFileName(globalTypingsCacheLocation), pathToTopLevelNodeModules))) {
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return undefined;
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}
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// If the module was found in @types, get the actual Node package name
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const nodeModulesDirectoryName = moduleSpecifier.substring(parts.topLevelPackageNameIndex + 1);
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const packageName = getPackageNameFromTypesPackageName(nodeModulesDirectoryName);
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// For classic resolution, only allow importing from node_modules/@types, not other node_modules
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return getEmitModuleResolutionKind(options) !== ModuleResolutionKind.NodeJs && packageName === nodeModulesDirectoryName ? undefined : packageName;
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function tryDirectoryWithPackageJson(packageRootIndex: number) {
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const packageRootPath = path.substring(0, packageRootIndex);
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const packageJsonPath = combinePaths(packageRootPath, "package.json");
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let moduleFileToTry = path;
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if (host.fileExists(packageJsonPath)) {
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const packageJsonContent = JSON.parse(host.readFile!(packageJsonPath)!);
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const versionPaths = packageJsonContent.typesVersions
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? getPackageJsonTypesVersionsPaths(packageJsonContent.typesVersions)
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: undefined;
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if (versionPaths) {
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const subModuleName = path.slice(packageRootPath.length + 1);
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const fromPaths = tryGetModuleNameFromPaths(
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removeFileExtension(subModuleName),
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|
removeExtensionAndIndexPostFix(subModuleName, Ending.Minimal, options),
|
|
versionPaths.paths
|
|
);
|
|
if (fromPaths !== undefined) {
|
|
moduleFileToTry = combinePaths(packageRootPath, fromPaths);
|
|
}
|
|
}
|
|
|
|
// If the file is the main module, it can be imported by the package name
|
|
const mainFileRelative = packageJsonContent.typings || packageJsonContent.types || packageJsonContent.main;
|
|
if (isString(mainFileRelative)) {
|
|
const mainExportFile = toPath(mainFileRelative, packageRootPath, getCanonicalFileName);
|
|
if (removeFileExtension(mainExportFile) === removeFileExtension(getCanonicalFileName(moduleFileToTry))) {
|
|
return { packageRootPath, moduleFileToTry };
|
|
}
|
|
}
|
|
}
|
|
return { moduleFileToTry };
|
|
}
|
|
|
|
function getExtensionlessFileName(path: string): string {
|
|
// We still have a file name - remove the extension
|
|
const fullModulePathWithoutExtension = removeFileExtension(path);
|
|
|
|
// If the file is /index, it can be imported by its directory name
|
|
// IFF there is not _also_ a file by the same name
|
|
if (getCanonicalFileName(fullModulePathWithoutExtension.substring(parts.fileNameIndex)) === "/index" && !tryGetAnyFileFromPath(host, fullModulePathWithoutExtension.substring(0, parts.fileNameIndex))) {
|
|
return fullModulePathWithoutExtension.substring(0, parts.fileNameIndex);
|
|
}
|
|
|
|
return fullModulePathWithoutExtension;
|
|
}
|
|
}
|
|
|
|
function tryGetAnyFileFromPath(host: ModuleSpecifierResolutionHost, path: string) {
|
|
if (!host.fileExists) return;
|
|
// We check all js, `node` and `json` extensions in addition to TS, since node module resolution would also choose those over the directory
|
|
const extensions = getSupportedExtensions({ allowJs: true }, [{ extension: "node", isMixedContent: false }, { extension: "json", isMixedContent: false, scriptKind: ScriptKind.JSON }]);
|
|
for (const e of extensions) {
|
|
const fullPath = path + e;
|
|
if (host.fileExists(fullPath)) {
|
|
return fullPath;
|
|
}
|
|
}
|
|
}
|
|
|
|
interface NodeModulePathParts {
|
|
readonly topLevelNodeModulesIndex: number;
|
|
readonly topLevelPackageNameIndex: number;
|
|
readonly packageRootIndex: number;
|
|
readonly fileNameIndex: number;
|
|
}
|
|
function getNodeModulePathParts(fullPath: string): NodeModulePathParts | undefined {
|
|
// If fullPath can't be valid module file within node_modules, returns undefined.
|
|
// Example of expected pattern: /base/path/node_modules/[@scope/otherpackage/@otherscope/node_modules/]package/[subdirectory/]file.js
|
|
// Returns indices: ^ ^ ^ ^
|
|
|
|
let topLevelNodeModulesIndex = 0;
|
|
let topLevelPackageNameIndex = 0;
|
|
let packageRootIndex = 0;
|
|
let fileNameIndex = 0;
|
|
|
|
const enum States {
|
|
BeforeNodeModules,
|
|
NodeModules,
|
|
Scope,
|
|
PackageContent
|
|
}
|
|
|
|
let partStart = 0;
|
|
let partEnd = 0;
|
|
let state = States.BeforeNodeModules;
|
|
|
|
while (partEnd >= 0) {
|
|
partStart = partEnd;
|
|
partEnd = fullPath.indexOf("/", partStart + 1);
|
|
switch (state) {
|
|
case States.BeforeNodeModules:
|
|
if (fullPath.indexOf(nodeModulesPathPart, partStart) === partStart) {
|
|
topLevelNodeModulesIndex = partStart;
|
|
topLevelPackageNameIndex = partEnd;
|
|
state = States.NodeModules;
|
|
}
|
|
break;
|
|
case States.NodeModules:
|
|
case States.Scope:
|
|
if (state === States.NodeModules && fullPath.charAt(partStart + 1) === "@") {
|
|
state = States.Scope;
|
|
}
|
|
else {
|
|
packageRootIndex = partEnd;
|
|
state = States.PackageContent;
|
|
}
|
|
break;
|
|
case States.PackageContent:
|
|
if (fullPath.indexOf(nodeModulesPathPart, partStart) === partStart) {
|
|
state = States.NodeModules;
|
|
}
|
|
else {
|
|
state = States.PackageContent;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
fileNameIndex = partStart;
|
|
|
|
return state > States.NodeModules ? { topLevelNodeModulesIndex, topLevelPackageNameIndex, packageRootIndex, fileNameIndex } : undefined;
|
|
}
|
|
|
|
function getPathRelativeToRootDirs(path: string, rootDirs: readonly string[], getCanonicalFileName: GetCanonicalFileName): string | undefined {
|
|
return firstDefined(rootDirs, rootDir => {
|
|
const relativePath = getRelativePathIfInDirectory(path, rootDir, getCanonicalFileName)!; // TODO: GH#18217
|
|
return isPathRelativeToParent(relativePath) ? undefined : relativePath;
|
|
});
|
|
}
|
|
|
|
function removeExtensionAndIndexPostFix(fileName: string, ending: Ending, options: CompilerOptions): string {
|
|
if (fileExtensionIs(fileName, Extension.Json)) return fileName;
|
|
const noExtension = removeFileExtension(fileName);
|
|
switch (ending) {
|
|
case Ending.Minimal:
|
|
return removeSuffix(noExtension, "/index");
|
|
case Ending.Index:
|
|
return noExtension;
|
|
case Ending.JsExtension:
|
|
return noExtension + getJSExtensionForFile(fileName, options);
|
|
default:
|
|
return Debug.assertNever(ending);
|
|
}
|
|
}
|
|
|
|
function getJSExtensionForFile(fileName: string, options: CompilerOptions): Extension {
|
|
const ext = extensionFromPath(fileName);
|
|
switch (ext) {
|
|
case Extension.Ts:
|
|
case Extension.Dts:
|
|
return Extension.Js;
|
|
case Extension.Tsx:
|
|
return options.jsx === JsxEmit.Preserve ? Extension.Jsx : Extension.Js;
|
|
case Extension.Js:
|
|
case Extension.Jsx:
|
|
case Extension.Json:
|
|
return ext;
|
|
case Extension.TsBuildInfo:
|
|
return Debug.fail(`Extension ${Extension.TsBuildInfo} is unsupported:: FileName:: ${fileName}`);
|
|
default:
|
|
return Debug.assertNever(ext);
|
|
}
|
|
}
|
|
|
|
function getRelativePathIfInDirectory(path: string, directoryPath: string, getCanonicalFileName: GetCanonicalFileName): string | undefined {
|
|
const relativePath = getRelativePathToDirectoryOrUrl(directoryPath, path, directoryPath, getCanonicalFileName, /*isAbsolutePathAnUrl*/ false);
|
|
return isRootedDiskPath(relativePath) ? undefined : relativePath;
|
|
}
|
|
|
|
function isPathRelativeToParent(path: string): boolean {
|
|
return startsWith(path, "..");
|
|
}
|
|
}
|