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moduleNameResolver.ts
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3389 lines (3126 loc) · 175 KB
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import {
append,
appendIfUnique,
arrayIsEqualTo,
changeAnyExtension,
changeFullExtension,
CharacterCodes,
combinePaths,
CommandLineOption,
comparePaths,
Comparison,
CompilerHost,
CompilerOptions,
concatenate,
contains,
containsPath,
createCompilerDiagnostic,
Debug,
deduplicate,
Diagnostic,
DiagnosticMessage,
DiagnosticReporter,
Diagnostics,
directoryProbablyExists,
directorySeparator,
emptyArray,
endsWith,
ensureTrailingDirectorySeparator,
every,
Extension,
extensionIsTS,
fileExtensionIs,
fileExtensionIsOneOf,
filter,
firstDefined,
forEach,
forEachAncestorDirectory,
formatMessage,
getAllowJSCompilerOption,
getAnyExtensionFromPath,
getBaseFileName,
GetCanonicalFileName,
getCommonSourceDirectory,
getCompilerOptionValue,
getDirectoryPath,
GetEffectiveTypeRootsHost,
getEmitModuleResolutionKind,
getNormalizedAbsolutePath,
getOwnKeys,
getPathComponents,
getPathFromPathComponents,
getPathsBasePath,
getPossibleOriginalInputExtensionForExtension,
getRelativePathFromDirectory,
getResolveJsonModule,
getRootLength,
hasProperty,
hasTrailingDirectorySeparator,
hostGetCanonicalFileName,
inferredTypesContainingFile,
isArray,
isDeclarationFileName,
isExternalModuleNameRelative,
isRootedDiskPath,
isString,
lastOrUndefined,
length,
MapLike,
matchedText,
MatchingKeys,
matchPatternOrExact,
ModuleKind,
ModuleResolutionHost,
ModuleResolutionKind,
moduleResolutionOptionDeclarations,
moduleResolutionSupportsPackageJsonExportsAndImports,
noop,
normalizePath,
normalizeSlashes,
PackageId,
packageIdToString,
Path,
pathIsRelative,
Pattern,
patternText,
perfLogger,
readJson,
removeExtension,
removeFileExtension,
removePrefix,
replaceFirstStar,
ResolutionMode,
ResolvedModuleWithFailedLookupLocations,
ResolvedProjectReference,
ResolvedTypeReferenceDirective,
ResolvedTypeReferenceDirectiveWithFailedLookupLocations,
some,
sort,
startsWith,
supportedDeclarationExtensions,
supportedJSExtensionsFlat,
supportedTSImplementationExtensions,
toPath,
tryExtractTSExtension,
tryGetExtensionFromPath,
tryParsePatterns,
Version,
version,
versionMajorMinor,
VersionRange,
} from "./_namespaces/ts.js";
/** @internal */
export function trace(host: ModuleResolutionHost, message: DiagnosticMessage, ...args: any[]): void {
host.trace!(formatMessage(message, ...args));
}
/** @internal */
export function isTraceEnabled(compilerOptions: CompilerOptions, host: ModuleResolutionHost): boolean {
return !!compilerOptions.traceResolution && host.trace !== undefined;
}
function withPackageId(packageInfo: PackageJsonInfo | undefined, r: PathAndExtension | undefined, state: ModuleResolutionState): Resolved | undefined {
let packageId: PackageId | undefined;
if (r && packageInfo) {
const packageJsonContent = packageInfo.contents.packageJsonContent as PackageJson;
if (typeof packageJsonContent.name === "string" && typeof packageJsonContent.version === "string") {
packageId = {
name: packageJsonContent.name,
subModuleName: r.path.slice(packageInfo.packageDirectory.length + directorySeparator.length),
version: packageJsonContent.version,
peerDependencies: getPeerDependenciesOfPackageJsonInfo(packageInfo, state),
};
}
}
return r && { path: r.path, extension: r.ext, packageId, resolvedUsingTsExtension: r.resolvedUsingTsExtension };
}
function noPackageId(r: PathAndExtension | undefined): Resolved | undefined {
return withPackageId(/*packageInfo*/ undefined, r, /*state*/ undefined!); // State will not be used so no need to pass
}
function removeIgnoredPackageId(r: Resolved | undefined): PathAndExtension | undefined {
if (r) {
Debug.assert(r.packageId === undefined);
return { path: r.path, ext: r.extension, resolvedUsingTsExtension: r.resolvedUsingTsExtension };
}
}
/** Result of trying to resolve a module. */
interface Resolved {
path: string;
extension: string;
packageId: PackageId | undefined;
/**
* When the resolved is not created from cache, the value is
* - string if it is symbolic link to the resolved `path`
* - undefined if `path` is not a symbolic link
* When the resolved is created using value from cache of ResolvedModuleWithFailedLookupLocations, the value is:
* - string if it is symbolic link to the resolved `path`
* - true if `path` is not a symbolic link - this indicates that the `originalPath` calculation is already done and needs to be skipped
* Note: This is a file name with preserved original casing, not a normalized `Path`.
*/
originalPath?: string | true;
resolvedUsingTsExtension: boolean | undefined;
}
/** Result of trying to resolve a module at a file. Needs to have 'packageId' added later. */
interface PathAndExtension {
path: string;
// (Use a different name than `extension` to make sure Resolved isn't assignable to PathAndExtension.)
ext: string;
resolvedUsingTsExtension: boolean | undefined;
}
// dprint-ignore
/**
* Kinds of file that we are currently looking for.
*/
const enum Extensions {
TypeScript = 1 << 0, // '.ts', '.tsx', '.mts', '.cts'
JavaScript = 1 << 1, // '.js', '.jsx', '.mjs', '.cjs'
Declaration = 1 << 2, // '.d.ts', etc.
Json = 1 << 3, // '.json'
ImplementationFiles = TypeScript | JavaScript,
}
function formatExtensions(extensions: Extensions) {
const result: string[] = [];
if (extensions & Extensions.TypeScript) result.push("TypeScript");
if (extensions & Extensions.JavaScript) result.push("JavaScript");
if (extensions & Extensions.Declaration) result.push("Declaration");
if (extensions & Extensions.Json) result.push("JSON");
return result.join(", ");
}
function extensionsToExtensionsArray(extensions: Extensions) {
const result: Extension[] = [];
if (extensions & Extensions.TypeScript) result.push(...supportedTSImplementationExtensions);
if (extensions & Extensions.JavaScript) result.push(...supportedJSExtensionsFlat);
if (extensions & Extensions.Declaration) result.push(...supportedDeclarationExtensions);
if (extensions & Extensions.Json) result.push(Extension.Json);
return result;
}
interface PathAndPackageId {
readonly fileName: string;
readonly packageId: PackageId | undefined;
}
/** Used with `Extensions.DtsOnly` to extract the path from TypeScript results. */
function resolvedTypeScriptOnly(resolved: Resolved | undefined): PathAndPackageId | undefined {
if (!resolved) {
return undefined;
}
Debug.assert(extensionIsTS(resolved.extension));
return { fileName: resolved.path, packageId: resolved.packageId };
}
function createResolvedModuleWithFailedLookupLocationsHandlingSymlink(
moduleName: string,
resolved: Resolved | undefined,
isExternalLibraryImport: boolean | undefined,
failedLookupLocations: string[],
affectingLocations: string[],
diagnostics: Diagnostic[],
state: ModuleResolutionState,
cache: ModuleResolutionCache | NonRelativeModuleNameResolutionCache | undefined,
alternateResult?: string,
): ResolvedModuleWithFailedLookupLocations {
// If this is from node_modules for non relative name, always respect preserveSymlinks
if (
!state.resultFromCache &&
!state.compilerOptions.preserveSymlinks &&
resolved &&
isExternalLibraryImport &&
!resolved.originalPath &&
!isExternalModuleNameRelative(moduleName)
) {
const { resolvedFileName, originalPath } = getOriginalAndResolvedFileName(resolved.path, state.host, state.traceEnabled);
if (originalPath) resolved = { ...resolved, path: resolvedFileName, originalPath };
}
return createResolvedModuleWithFailedLookupLocations(
resolved,
isExternalLibraryImport,
failedLookupLocations,
affectingLocations,
diagnostics,
state.resultFromCache,
cache,
alternateResult,
);
}
function createResolvedModuleWithFailedLookupLocations(
resolved: Resolved | undefined,
isExternalLibraryImport: boolean | undefined,
failedLookupLocations: string[],
affectingLocations: string[],
diagnostics: Diagnostic[],
resultFromCache: ResolvedModuleWithFailedLookupLocations | undefined,
cache: ModuleResolutionCache | NonRelativeModuleNameResolutionCache | undefined,
alternateResult?: string,
): ResolvedModuleWithFailedLookupLocations {
if (resultFromCache) {
if (!cache?.isReadonly) {
resultFromCache.failedLookupLocations = updateResolutionField(resultFromCache.failedLookupLocations, failedLookupLocations);
resultFromCache.affectingLocations = updateResolutionField(resultFromCache.affectingLocations, affectingLocations);
resultFromCache.resolutionDiagnostics = updateResolutionField(resultFromCache.resolutionDiagnostics, diagnostics);
return resultFromCache;
}
else {
return {
...resultFromCache,
failedLookupLocations: initializeResolutionFieldForReadonlyCache(resultFromCache.failedLookupLocations, failedLookupLocations),
affectingLocations: initializeResolutionFieldForReadonlyCache(resultFromCache.affectingLocations, affectingLocations),
resolutionDiagnostics: initializeResolutionFieldForReadonlyCache(resultFromCache.resolutionDiagnostics, diagnostics),
};
}
}
return {
resolvedModule: resolved && {
resolvedFileName: resolved.path,
originalPath: resolved.originalPath === true ? undefined : resolved.originalPath,
extension: resolved.extension,
isExternalLibraryImport,
packageId: resolved.packageId,
resolvedUsingTsExtension: !!resolved.resolvedUsingTsExtension,
},
failedLookupLocations: initializeResolutionField(failedLookupLocations),
affectingLocations: initializeResolutionField(affectingLocations),
resolutionDiagnostics: initializeResolutionField(diagnostics),
alternateResult,
};
}
function initializeResolutionField<T>(value: T[]): T[] | undefined {
return value.length ? value : undefined;
}
/** @internal */
export function updateResolutionField<T>(to: T[] | undefined, value: T[] | undefined) {
if (!value?.length) return to;
if (!to?.length) return value;
to.push(...value);
return to;
}
function initializeResolutionFieldForReadonlyCache<T>(fromCache: T[] | undefined, value: T[]): T[] | undefined {
if (!fromCache?.length) return initializeResolutionField(value);
if (!value.length) return fromCache.slice();
return [...fromCache, ...value];
}
/** @internal */
export interface ModuleResolutionState {
host: ModuleResolutionHost;
compilerOptions: CompilerOptions;
traceEnabled: boolean;
failedLookupLocations: string[] | undefined;
affectingLocations: string[] | undefined;
resultFromCache?: ResolvedModuleWithFailedLookupLocations;
packageJsonInfoCache: PackageJsonInfoCache | undefined;
features: NodeResolutionFeatures;
conditions: readonly string[];
requestContainingDirectory: string | undefined;
reportDiagnostic: DiagnosticReporter;
isConfigLookup: boolean;
candidateIsFromPackageJsonField: boolean;
resolvedPackageDirectory: boolean;
}
/** Just the fields that we use for module resolution.
*
* @internal
*/
export interface PackageJsonPathFields {
typings?: string;
types?: string;
typesVersions?: MapLike<MapLike<string[]>>;
main?: string;
tsconfig?: string;
type?: string;
imports?: object;
exports?: object;
name?: string;
dependencies?: MapLike<string>;
peerDependencies?: MapLike<string>;
optionalDependencies?: MapLike<string>;
}
interface PackageJson extends PackageJsonPathFields {
name?: string;
version?: string;
}
function readPackageJsonField<K extends MatchingKeys<PackageJson, string | undefined>>(jsonContent: PackageJson, fieldName: K, typeOfTag: "string", state: ModuleResolutionState): PackageJson[K] | undefined;
function readPackageJsonField<K extends MatchingKeys<PackageJson, object | undefined>>(jsonContent: PackageJson, fieldName: K, typeOfTag: "object", state: ModuleResolutionState): PackageJson[K] | undefined; // eslint-disable-line @typescript-eslint/unified-signatures
function readPackageJsonField<K extends keyof PackageJson>(jsonContent: PackageJson, fieldName: K, typeOfTag: "string" | "object", state: ModuleResolutionState): PackageJson[K] | undefined {
if (!hasProperty(jsonContent, fieldName)) {
if (state.traceEnabled) {
trace(state.host, Diagnostics.package_json_does_not_have_a_0_field, fieldName);
}
return;
}
const value = jsonContent[fieldName];
if (typeof value !== typeOfTag || value === null) { // eslint-disable-line no-restricted-syntax
if (state.traceEnabled) {
// eslint-disable-next-line no-restricted-syntax
trace(state.host, Diagnostics.Expected_type_of_0_field_in_package_json_to_be_1_got_2, fieldName, typeOfTag, value === null ? "null" : typeof value);
}
return;
}
return value;
}
function readPackageJsonPathField<K extends "typings" | "types" | "main" | "tsconfig">(jsonContent: PackageJson, fieldName: K, baseDirectory: string, state: ModuleResolutionState): PackageJson[K] | undefined {
const fileName = readPackageJsonField(jsonContent, fieldName, "string", state);
if (fileName === undefined) {
return;
}
if (!fileName) {
if (state.traceEnabled) {
trace(state.host, Diagnostics.package_json_had_a_falsy_0_field, fieldName);
}
return;
}
const path = normalizePath(combinePaths(baseDirectory, fileName));
if (state.traceEnabled) {
trace(state.host, Diagnostics.package_json_has_0_field_1_that_references_2, fieldName, fileName, path);
}
return path;
}
function readPackageJsonTypesFields(jsonContent: PackageJson, baseDirectory: string, state: ModuleResolutionState) {
return readPackageJsonPathField(jsonContent, "typings", baseDirectory, state)
|| readPackageJsonPathField(jsonContent, "types", baseDirectory, state);
}
function readPackageJsonTSConfigField(jsonContent: PackageJson, baseDirectory: string, state: ModuleResolutionState) {
return readPackageJsonPathField(jsonContent, "tsconfig", baseDirectory, state);
}
function readPackageJsonMainField(jsonContent: PackageJson, baseDirectory: string, state: ModuleResolutionState) {
return readPackageJsonPathField(jsonContent, "main", baseDirectory, state);
}
function readPackageJsonTypesVersionsField(jsonContent: PackageJson, state: ModuleResolutionState) {
const typesVersions = readPackageJsonField(jsonContent, "typesVersions", "object", state);
if (typesVersions === undefined) return;
if (state.traceEnabled) {
trace(state.host, Diagnostics.package_json_has_a_typesVersions_field_with_version_specific_path_mappings);
}
return typesVersions;
}
/** @internal */
export interface VersionPaths {
version: string;
paths: MapLike<string[]>;
}
function readPackageJsonTypesVersionPaths(jsonContent: PackageJson, state: ModuleResolutionState): VersionPaths | undefined {
const typesVersions = readPackageJsonTypesVersionsField(jsonContent, state);
if (typesVersions === undefined) return;
if (state.traceEnabled) {
for (const key in typesVersions) {
if (hasProperty(typesVersions, key) && !VersionRange.tryParse(key)) {
trace(state.host, Diagnostics.package_json_has_a_typesVersions_entry_0_that_is_not_a_valid_semver_range, key);
}
}
}
const result = getPackageJsonTypesVersionsPaths(typesVersions);
if (!result) {
if (state.traceEnabled) {
trace(state.host, Diagnostics.package_json_does_not_have_a_typesVersions_entry_that_matches_version_0, versionMajorMinor);
}
return;
}
const { version: bestVersionKey, paths: bestVersionPaths } = result;
if (typeof bestVersionPaths !== "object") {
if (state.traceEnabled) {
trace(state.host, Diagnostics.Expected_type_of_0_field_in_package_json_to_be_1_got_2, `typesVersions['${bestVersionKey}']`, "object", typeof bestVersionPaths);
}
return;
}
return result;
}
let typeScriptVersion: Version | undefined;
/** @internal */
export function getPackageJsonTypesVersionsPaths(typesVersions: MapLike<MapLike<string[]>>) {
if (!typeScriptVersion) typeScriptVersion = new Version(version);
for (const key in typesVersions) {
if (!hasProperty(typesVersions, key)) continue;
const keyRange = VersionRange.tryParse(key);
if (keyRange === undefined) {
continue;
}
// return the first entry whose range matches the current compiler version.
if (keyRange.test(typeScriptVersion)) {
return { version: key, paths: typesVersions[key] };
}
}
}
export function getEffectiveTypeRoots(options: CompilerOptions, host: GetEffectiveTypeRootsHost): string[] | undefined {
if (options.typeRoots) {
return options.typeRoots;
}
let currentDirectory: string | undefined;
if (options.configFilePath) {
currentDirectory = getDirectoryPath(options.configFilePath);
}
else if (host.getCurrentDirectory) {
currentDirectory = host.getCurrentDirectory();
}
if (currentDirectory !== undefined) {
return getDefaultTypeRoots(currentDirectory);
}
}
/**
* Returns the path to every node_modules/@types directory from some ancestor directory.
* Returns undefined if there are none.
*/
function getDefaultTypeRoots(currentDirectory: string): string[] | undefined {
let typeRoots: string[] | undefined;
forEachAncestorDirectory(normalizePath(currentDirectory), directory => {
const atTypes = combinePaths(directory, nodeModulesAtTypes);
(typeRoots ??= []).push(atTypes);
});
return typeRoots;
}
const nodeModulesAtTypes = combinePaths("node_modules", "@types");
function arePathsEqual(path1: string, path2: string, host: ModuleResolutionHost): boolean {
const useCaseSensitiveFileNames = typeof host.useCaseSensitiveFileNames === "function" ? host.useCaseSensitiveFileNames() : host.useCaseSensitiveFileNames;
return comparePaths(path1, path2, !useCaseSensitiveFileNames) === Comparison.EqualTo;
}
function getOriginalAndResolvedFileName(fileName: string, host: ModuleResolutionHost, traceEnabled: boolean) {
const resolvedFileName = realPath(fileName, host, traceEnabled);
const pathsAreEqual = arePathsEqual(fileName, resolvedFileName, host);
return {
// If the fileName and realpath are differing only in casing prefer fileName so that we can issue correct errors for casing under forceConsistentCasingInFileNames
resolvedFileName: pathsAreEqual ? fileName : resolvedFileName,
originalPath: pathsAreEqual ? undefined : fileName,
};
}
function getCandidateFromTypeRoot(typeRoot: string, typeReferenceDirectiveName: string, moduleResolutionState: ModuleResolutionState) {
const nameForLookup = endsWith(typeRoot, "/node_modules/@types") || endsWith(typeRoot, "/node_modules/@types/") ?
mangleScopedPackageNameWithTrace(typeReferenceDirectiveName, moduleResolutionState) :
typeReferenceDirectiveName;
return combinePaths(typeRoot, nameForLookup);
}
/**
* @param {string | undefined} containingFile - file that contains type reference directive, can be undefined if containing file is unknown.
* This is possible in case if resolution is performed for directives specified via 'types' parameter. In this case initial path for secondary lookups
* is assumed to be the same as root directory of the project.
*/
export function resolveTypeReferenceDirective(typeReferenceDirectiveName: string, containingFile: string | undefined, options: CompilerOptions, host: ModuleResolutionHost, redirectedReference?: ResolvedProjectReference, cache?: TypeReferenceDirectiveResolutionCache, resolutionMode?: ResolutionMode): ResolvedTypeReferenceDirectiveWithFailedLookupLocations {
Debug.assert(typeof typeReferenceDirectiveName === "string", "Non-string value passed to `ts.resolveTypeReferenceDirective`, likely by a wrapping package working with an outdated `resolveTypeReferenceDirectives` signature. This is probably not a problem in TS itself.");
const traceEnabled = isTraceEnabled(options, host);
if (redirectedReference) {
options = redirectedReference.commandLine.options;
}
const containingDirectory = containingFile ? getDirectoryPath(containingFile) : undefined;
let result = containingDirectory ? cache?.getFromDirectoryCache(typeReferenceDirectiveName, resolutionMode, containingDirectory, redirectedReference) : undefined;
if (!result && containingDirectory && !isExternalModuleNameRelative(typeReferenceDirectiveName)) {
result = cache?.getFromNonRelativeNameCache(typeReferenceDirectiveName, resolutionMode, containingDirectory, redirectedReference);
}
if (result) {
if (traceEnabled) {
trace(host, Diagnostics.Resolving_type_reference_directive_0_containing_file_1, typeReferenceDirectiveName, containingFile);
if (redirectedReference) trace(host, Diagnostics.Using_compiler_options_of_project_reference_redirect_0, redirectedReference.sourceFile.fileName);
trace(host, Diagnostics.Resolution_for_type_reference_directive_0_was_found_in_cache_from_location_1, typeReferenceDirectiveName, containingDirectory);
traceResult(result);
}
return result;
}
const typeRoots = getEffectiveTypeRoots(options, host);
if (traceEnabled) {
if (containingFile === undefined) {
if (typeRoots === undefined) {
trace(host, Diagnostics.Resolving_type_reference_directive_0_containing_file_not_set_root_directory_not_set, typeReferenceDirectiveName);
}
else {
trace(host, Diagnostics.Resolving_type_reference_directive_0_containing_file_not_set_root_directory_1, typeReferenceDirectiveName, typeRoots);
}
}
else {
if (typeRoots === undefined) {
trace(host, Diagnostics.Resolving_type_reference_directive_0_containing_file_1_root_directory_not_set, typeReferenceDirectiveName, containingFile);
}
else {
trace(host, Diagnostics.Resolving_type_reference_directive_0_containing_file_1_root_directory_2, typeReferenceDirectiveName, containingFile, typeRoots);
}
}
if (redirectedReference) {
trace(host, Diagnostics.Using_compiler_options_of_project_reference_redirect_0, redirectedReference.sourceFile.fileName);
}
}
const failedLookupLocations: string[] = [];
const affectingLocations: string[] = [];
// Allow type reference directives to opt into `exports` resolution in any resolution mode
// when a `resolution-mode` override is present.
let features = getNodeResolutionFeatures(options);
if (resolutionMode !== undefined) {
features |= NodeResolutionFeatures.AllFeatures;
}
const moduleResolution = getEmitModuleResolutionKind(options);
if (resolutionMode === ModuleKind.ESNext && (ModuleResolutionKind.Node16 <= moduleResolution && moduleResolution <= ModuleResolutionKind.NodeNext)) {
features |= NodeResolutionFeatures.EsmMode;
}
const conditions = (features & NodeResolutionFeatures.Exports)
? getConditions(options, resolutionMode)
: [];
const diagnostics: Diagnostic[] = [];
const moduleResolutionState: ModuleResolutionState = {
compilerOptions: options,
host,
traceEnabled,
failedLookupLocations,
affectingLocations,
packageJsonInfoCache: cache,
features,
conditions,
requestContainingDirectory: containingDirectory,
reportDiagnostic: diag => void diagnostics.push(diag),
isConfigLookup: false,
candidateIsFromPackageJsonField: false,
resolvedPackageDirectory: false,
};
let resolved = primaryLookup();
let primary = true;
if (!resolved) {
resolved = secondaryLookup();
primary = false;
}
let resolvedTypeReferenceDirective: ResolvedTypeReferenceDirective | undefined;
if (resolved) {
const { fileName, packageId } = resolved;
let resolvedFileName = fileName, originalPath: string | undefined;
if (!options.preserveSymlinks) ({ resolvedFileName, originalPath } = getOriginalAndResolvedFileName(fileName, host, traceEnabled));
resolvedTypeReferenceDirective = {
primary,
resolvedFileName,
originalPath,
packageId,
isExternalLibraryImport: pathContainsNodeModules(fileName),
};
}
result = {
resolvedTypeReferenceDirective,
failedLookupLocations: initializeResolutionField(failedLookupLocations),
affectingLocations: initializeResolutionField(affectingLocations),
resolutionDiagnostics: initializeResolutionField(diagnostics),
};
if (containingDirectory && cache && !cache.isReadonly) {
cache.getOrCreateCacheForDirectory(containingDirectory, redirectedReference).set(typeReferenceDirectiveName, /*mode*/ resolutionMode, result);
if (!isExternalModuleNameRelative(typeReferenceDirectiveName)) {
cache.getOrCreateCacheForNonRelativeName(typeReferenceDirectiveName, resolutionMode, redirectedReference).set(containingDirectory, result);
}
}
if (traceEnabled) traceResult(result);
return result;
function traceResult(result: ResolvedTypeReferenceDirectiveWithFailedLookupLocations) {
if (!result.resolvedTypeReferenceDirective?.resolvedFileName) {
trace(host, Diagnostics.Type_reference_directive_0_was_not_resolved, typeReferenceDirectiveName);
}
else if (result.resolvedTypeReferenceDirective.packageId) {
trace(host, Diagnostics.Type_reference_directive_0_was_successfully_resolved_to_1_with_Package_ID_2_primary_Colon_3, typeReferenceDirectiveName, result.resolvedTypeReferenceDirective.resolvedFileName, packageIdToString(result.resolvedTypeReferenceDirective.packageId), result.resolvedTypeReferenceDirective.primary);
}
else {
trace(host, Diagnostics.Type_reference_directive_0_was_successfully_resolved_to_1_primary_Colon_2, typeReferenceDirectiveName, result.resolvedTypeReferenceDirective.resolvedFileName, result.resolvedTypeReferenceDirective.primary);
}
}
function primaryLookup(): PathAndPackageId | undefined {
// Check primary library paths
if (typeRoots && typeRoots.length) {
if (traceEnabled) {
trace(host, Diagnostics.Resolving_with_primary_search_path_0, typeRoots.join(", "));
}
return firstDefined(typeRoots, typeRoot => {
const candidate = getCandidateFromTypeRoot(typeRoot, typeReferenceDirectiveName, moduleResolutionState);
const directoryExists = directoryProbablyExists(typeRoot, host);
if (!directoryExists && traceEnabled) {
trace(host, Diagnostics.Directory_0_does_not_exist_skipping_all_lookups_in_it, typeRoot);
}
if (options.typeRoots) {
// Custom typeRoots resolve as file or directory just like we do modules
const resolvedFromFile = loadModuleFromFile(Extensions.Declaration, candidate, !directoryExists, moduleResolutionState);
if (resolvedFromFile) {
const packageDirectory = parseNodeModuleFromPath(resolvedFromFile.path);
const packageInfo = packageDirectory ? getPackageJsonInfo(packageDirectory, /*onlyRecordFailures*/ false, moduleResolutionState) : undefined;
return resolvedTypeScriptOnly(withPackageId(packageInfo, resolvedFromFile, moduleResolutionState));
}
}
return resolvedTypeScriptOnly(
loadNodeModuleFromDirectory(Extensions.Declaration, candidate, !directoryExists, moduleResolutionState),
);
});
}
else {
if (traceEnabled) {
trace(host, Diagnostics.Root_directory_cannot_be_determined_skipping_primary_search_paths);
}
}
}
function secondaryLookup(): PathAndPackageId | undefined {
const initialLocationForSecondaryLookup = containingFile && getDirectoryPath(containingFile);
if (initialLocationForSecondaryLookup !== undefined) {
let result: Resolved | undefined;
if (!options.typeRoots || !endsWith(containingFile!, inferredTypesContainingFile)) {
// check secondary locations
if (traceEnabled) {
trace(host, Diagnostics.Looking_up_in_node_modules_folder_initial_location_0, initialLocationForSecondaryLookup);
}
if (!isExternalModuleNameRelative(typeReferenceDirectiveName)) {
const searchResult = loadModuleFromNearestNodeModulesDirectory(Extensions.Declaration, typeReferenceDirectiveName, initialLocationForSecondaryLookup, moduleResolutionState, /*cache*/ undefined, /*redirectedReference*/ undefined);
result = searchResult && searchResult.value;
}
else {
const { path: candidate } = normalizePathForCJSResolution(initialLocationForSecondaryLookup, typeReferenceDirectiveName);
result = nodeLoadModuleByRelativeName(Extensions.Declaration, candidate, /*onlyRecordFailures*/ false, moduleResolutionState, /*considerPackageJson*/ true);
}
}
else if (traceEnabled) {
trace(host, Diagnostics.Resolving_type_reference_directive_for_program_that_specifies_custom_typeRoots_skipping_lookup_in_node_modules_folder);
}
return resolvedTypeScriptOnly(result);
}
else {
if (traceEnabled) {
trace(host, Diagnostics.Containing_file_is_not_specified_and_root_directory_cannot_be_determined_skipping_lookup_in_node_modules_folder);
}
}
}
}
function getNodeResolutionFeatures(options: CompilerOptions) {
let features = NodeResolutionFeatures.None;
switch (getEmitModuleResolutionKind(options)) {
case ModuleResolutionKind.Node16:
features = NodeResolutionFeatures.Node16Default;
break;
case ModuleResolutionKind.NodeNext:
features = NodeResolutionFeatures.NodeNextDefault;
break;
case ModuleResolutionKind.Bundler:
features = NodeResolutionFeatures.BundlerDefault;
break;
}
if (options.resolvePackageJsonExports) {
features |= NodeResolutionFeatures.Exports;
}
else if (options.resolvePackageJsonExports === false) {
features &= ~NodeResolutionFeatures.Exports;
}
if (options.resolvePackageJsonImports) {
features |= NodeResolutionFeatures.Imports;
}
else if (options.resolvePackageJsonImports === false) {
features &= ~NodeResolutionFeatures.Imports;
}
return features;
}
/** @internal */
export function getConditions(options: CompilerOptions, resolutionMode?: ResolutionMode) {
const moduleResolution = getEmitModuleResolutionKind(options);
if (resolutionMode === undefined) {
if (moduleResolution === ModuleResolutionKind.Bundler) {
// bundler always uses `import` unless explicitly overridden
resolutionMode = ModuleKind.ESNext;
}
else if (moduleResolution === ModuleResolutionKind.Node10) {
// node10 does not support package.json imports/exports without
// an explicit resolution-mode override on a type-only import
// (indicated by `esmMode` being set)
return [];
}
}
// conditions are only used by the node16/nodenext/bundler resolvers - there's no priority order in the list,
// it's essentially a set (priority is determined by object insertion order in the object we look at).
const conditions = resolutionMode === ModuleKind.ESNext
? ["import"]
: ["require"];
if (!options.noDtsResolution) {
conditions.push("types");
}
if (moduleResolution !== ModuleResolutionKind.Bundler) {
conditions.push("node");
}
return concatenate(conditions, options.customConditions);
}
/**
* @internal
* Does not try `@types/${packageName}` - use a second pass if needed.
*/
export function resolvePackageNameToPackageJson(
packageName: string,
containingDirectory: string,
options: CompilerOptions,
host: ModuleResolutionHost,
cache: ModuleResolutionCache | undefined,
): PackageJsonInfo | undefined {
const moduleResolutionState = getTemporaryModuleResolutionState(cache?.getPackageJsonInfoCache(), host, options);
return forEachAncestorDirectory(containingDirectory, ancestorDirectory => {
if (getBaseFileName(ancestorDirectory) !== "node_modules") {
const nodeModulesFolder = combinePaths(ancestorDirectory, "node_modules");
const candidate = combinePaths(nodeModulesFolder, packageName);
return getPackageJsonInfo(candidate, /*onlyRecordFailures*/ false, moduleResolutionState);
}
});
}
/**
* Given a set of options, returns the set of type directive names
* that should be included for this program automatically.
* This list could either come from the config file,
* or from enumerating the types root + initial secondary types lookup location.
* More type directives might appear in the program later as a result of loading actual source files;
* this list is only the set of defaults that are implicitly included.
*/
export function getAutomaticTypeDirectiveNames(options: CompilerOptions, host: ModuleResolutionHost): string[] {
// Use explicit type list from tsconfig.json
if (options.types) {
return options.types;
}
// Walk the primary type lookup locations
const result: string[] = [];
if (host.directoryExists && host.getDirectories) {
const typeRoots = getEffectiveTypeRoots(options, host);
if (typeRoots) {
for (const root of typeRoots) {
if (host.directoryExists(root)) {
for (const typeDirectivePath of host.getDirectories(root)) {
const normalized = normalizePath(typeDirectivePath);
const packageJsonPath = combinePaths(root, normalized, "package.json");
// `types-publisher` sometimes creates packages with `"typings": null` for packages that don't provide their own types.
// See `createNotNeededPackageJSON` in the types-publisher` repo.
// eslint-disable-next-line no-restricted-syntax
const isNotNeededPackage = host.fileExists(packageJsonPath) && (readJson(packageJsonPath, host) as PackageJson).typings === null;
if (!isNotNeededPackage) {
const baseFileName = getBaseFileName(normalized);
// At this stage, skip results with leading dot.
if (baseFileName.charCodeAt(0) !== CharacterCodes.dot) {
// Return just the type directive names
result.push(baseFileName);
}
}
}
}
}
}
}
return result;
}
export interface TypeReferenceDirectiveResolutionCache extends PerDirectoryResolutionCache<ResolvedTypeReferenceDirectiveWithFailedLookupLocations>, NonRelativeNameResolutionCache<ResolvedTypeReferenceDirectiveWithFailedLookupLocations>, PackageJsonInfoCache {
/** @internal */ clearAllExceptPackageJsonInfoCache(): void;
}
export interface ModeAwareCache<T> {
get(key: string, mode: ResolutionMode): T | undefined;
set(key: string, mode: ResolutionMode, value: T): this;
delete(key: string, mode: ResolutionMode): this;
has(key: string, mode: ResolutionMode): boolean;
forEach(cb: (elem: T, key: string, mode: ResolutionMode) => void): void;
size(): number;
}
/**
* Cached resolutions per containing directory.
* This assumes that any module id will have the same resolution for sibling files located in the same folder.
*/
export interface PerDirectoryResolutionCache<T> {
getFromDirectoryCache(name: string, mode: ResolutionMode, directoryName: string, redirectedReference: ResolvedProjectReference | undefined): T | undefined;
getOrCreateCacheForDirectory(directoryName: string, redirectedReference?: ResolvedProjectReference): ModeAwareCache<T>;
clear(): void;
/**
* Updates with the current compilerOptions the cache will operate with.
* This updates the redirects map as well if needed so module resolutions are cached if they can across the projects
*/
update(options: CompilerOptions): void;
/** @internal */ directoryToModuleNameMap: CacheWithRedirects<Path, ModeAwareCache<T>>;
/** @internal */ isReadonly?: boolean;
}
export interface NonRelativeNameResolutionCache<T> {
getFromNonRelativeNameCache(nonRelativeName: string, mode: ResolutionMode, directoryName: string, redirectedReference: ResolvedProjectReference | undefined): T | undefined;
getOrCreateCacheForNonRelativeName(nonRelativeName: string, mode: ResolutionMode, redirectedReference?: ResolvedProjectReference): PerNonRelativeNameCache<T>;
clear(): void;
/**
* Updates with the current compilerOptions the cache will operate with.
* This updates the redirects map as well if needed so module resolutions are cached if they can across the projects
*/
update(options: CompilerOptions): void;
/** @internal */ isReadonly?: boolean;
}
export interface PerNonRelativeNameCache<T> {
get(directory: string): T | undefined;
set(directory: string, result: T): void;
/** @internal */ isReadonly?: boolean;
}
export interface ModuleResolutionCache extends PerDirectoryResolutionCache<ResolvedModuleWithFailedLookupLocations>, NonRelativeModuleNameResolutionCache, PackageJsonInfoCache {
getPackageJsonInfoCache(): PackageJsonInfoCache;
/** @internal */ clearAllExceptPackageJsonInfoCache(): void;
/** @internal */ optionsToRedirectsKey: Map<CompilerOptions, RedirectsCacheKey>;
}
/**
* Stored map from non-relative module name to a table: directory -> result of module lookup in this directory
* We support only non-relative module names because resolution of relative module names is usually more deterministic and thus less expensive.
*/
export interface NonRelativeModuleNameResolutionCache extends NonRelativeNameResolutionCache<ResolvedModuleWithFailedLookupLocations>, PackageJsonInfoCache {
/** @deprecated Use getOrCreateCacheForNonRelativeName */
getOrCreateCacheForModuleName(nonRelativeModuleName: string, mode: ResolutionMode, redirectedReference?: ResolvedProjectReference): PerModuleNameCache;
}
/** @internal */
export interface MissingPackageJsonInfo {
packageDirectory: string;
directoryExists: boolean;
}
/** @internal */
export type PackageJsonInfoCacheEntry = PackageJsonInfo | MissingPackageJsonInfo;
/** @internal */
export function isPackageJsonInfo(entry: PackageJsonInfoCacheEntry | undefined): entry is PackageJsonInfo {
return !!(entry as PackageJsonInfo | undefined)?.contents;
}
/** @internal */
export function isMissingPackageJsonInfo(entry: PackageJsonInfoCacheEntry | undefined): entry is MissingPackageJsonInfo {
return !!entry && !(entry as PackageJsonInfo).contents;
}
export interface PackageJsonInfoCache {
/** @internal */ getPackageJsonInfo(packageJsonPath: string): PackageJsonInfoCacheEntry | undefined;
/** @internal */ setPackageJsonInfo(packageJsonPath: string, info: PackageJsonInfoCacheEntry): void;
/** @internal */ getInternalMap(): Map<Path, PackageJsonInfoCacheEntry> | undefined;
clear(): void;
/** @internal */ isReadonly?: boolean;
}
export type PerModuleNameCache = PerNonRelativeNameCache<ResolvedModuleWithFailedLookupLocations>;
function compilerOptionValueToString(value: unknown): string {
if (value === null || typeof value !== "object") { // eslint-disable-line no-restricted-syntax
return "" + value;
}
if (isArray(value)) {
return `[${value.map(e => compilerOptionValueToString(e))?.join(",")}]`;
}
let str = "{";
for (const key in value) {
if (hasProperty(value, key)) {
str += `${key}: ${compilerOptionValueToString((value as any)[key])}`;
}
}
return str + "}";
}
/** @internal */
export function getKeyForCompilerOptions(options: CompilerOptions, affectingOptionDeclarations: readonly CommandLineOption[]) {
return affectingOptionDeclarations.map(option => compilerOptionValueToString(getCompilerOptionValue(options, option))).join("|") + `|${options.pathsBasePath}`;
}
/** @internal */
export interface CacheWithRedirects<K, V> {
getMapOfCacheRedirects(redirectedReference: ResolvedProjectReference | undefined): Map<K, V> | undefined;
getOrCreateMapOfCacheRedirects(redirectedReference: ResolvedProjectReference | undefined): Map<K, V>;
update(newOptions: CompilerOptions): void;
clear(): void;
getOwnMap(): Map<K, V>;
}
/** @internal */
export type RedirectsCacheKey = string & { __compilerOptionsKey: any; };
/** @internal */
export function createCacheWithRedirects<K, V>(ownOptions: CompilerOptions | undefined, optionsToRedirectsKey: Map<CompilerOptions, RedirectsCacheKey>): CacheWithRedirects<K, V> {
const redirectsMap = new Map<CompilerOptions, Map<K, V>>();
const redirectsKeyToMap = new Map<RedirectsCacheKey, Map<K, V>>();
let ownMap = new Map<K, V>();
if (ownOptions) redirectsMap.set(ownOptions, ownMap);
return {
getMapOfCacheRedirects,
getOrCreateMapOfCacheRedirects,
update,
clear,
getOwnMap: () => ownMap,
};
function getMapOfCacheRedirects(redirectedReference: ResolvedProjectReference | undefined): Map<K, V> | undefined {
return redirectedReference ?
getOrCreateMap(redirectedReference.commandLine.options, /*create*/ false) :
ownMap;
}
function getOrCreateMapOfCacheRedirects(redirectedReference: ResolvedProjectReference | undefined): Map<K, V> {
return redirectedReference ?
getOrCreateMap(redirectedReference.commandLine.options, /*create*/ true) :
ownMap;
}
function update(newOptions: CompilerOptions) {
if (ownOptions !== newOptions) {
if (ownOptions) ownMap = getOrCreateMap(newOptions, /*create*/ true); // set new map for new options as ownMap
else redirectsMap.set(newOptions, ownMap); // Use existing map if oldOptions = undefined