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- function resolveModuleName(request, issuer, compilerOptions, moduleResolutionHost, parentResolver) {
- const pnp = require(`pnpapi`);
- const [, prefix = ``, packageName = ``, rest] = request.match(/^(!(?:.*!)+)?((?!\.{0,2}\/)(?:@[^\/]+\/)?[^\/]+)?(.*)/);
- let failedLookupLocations = [];
- // First we try the resolution on "@types/package-name" starting from the project root
- if (packageName) {
- const typesPackagePath = `@types/${packageName.replace(/\//g, `__`)}${rest}`;
- let unqualified;
- try {
- unqualified = pnp.resolveToUnqualified(typesPackagePath, issuer, {considerBuiltins: false});
- } catch (error) {}
- if (unqualified) {
- // TypeScript checks whether the directory of the candidate is a directory
- // which may cause issues w/ zip loading (since the zip archive is still
- // reported as a file). To workaround this we add a trailing slash, which
- // causes TypeScript to assume the parent is a directory.
- if (moduleResolutionHost.directoryExists && moduleResolutionHost.directoryExists(unqualified))
- unqualified += `/`;
- const finalResolution = parentResolver(unqualified, issuer, compilerOptions, moduleResolutionHost);
- if (finalResolution.resolvedModule || finalResolution.resolvedTypeReferenceDirective) {
- return finalResolution;
- } else {
- failedLookupLocations = failedLookupLocations.concat(finalResolution.failedLookupLocations);
- }
- }
- }
- // Then we try on "package-name", this time starting from the package that makes the request
- if (true) {
- const regularPackagePath = `${packageName || ``}${rest}`;
- let unqualified;
- try {
- unqualified = pnp.resolveToUnqualified(regularPackagePath, issuer, {considerBuiltins: false});
- } catch (error) {}
- if (unqualified) {
- // TypeScript checks whether the directory of the candidate is a directory
- // which may cause issues w/ zip loading (since the zip archive is still
- // reported as a file). To workaround this we add a trailing slash, which
- // causes TypeScript to assume the parent is a directory.
- if (moduleResolutionHost.directoryExists && moduleResolutionHost.directoryExists(unqualified))
- unqualified += `/`;
- const finalResolution = parentResolver(unqualified, issuer, compilerOptions, moduleResolutionHost);
- if (finalResolution.resolvedModule || finalResolution.resolvedTypeReferenceDirective) {
- return finalResolution;
- } else {
- failedLookupLocations = failedLookupLocations.concat(finalResolution.failedLookupLocations);
- }
- }
- }
- return {
- resolvedModule: undefined,
- resolvedTypeReferenceDirective: undefined,
- failedLookupLocations,
- };
- }
- module.exports.resolveModuleName = process.versions.pnp
- ? resolveModuleName
- : (moduleName, containingFile, compilerOptions, compilerHost, resolveModuleName) =>
- resolveModuleName(moduleName, containingFile, compilerOptions, compilerHost);
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