Function augmentResolveModuleNames

packages/ngtools/webpack/src/ivy/host.ts:76–115

(
  host: ts.CompilerHost,
  resolvedModuleModifier: (
    resolvedModule: ts.ResolvedModule | undefined,
    moduleName: string,
  ) => ts.ResolvedModule | undefined,
  moduleResolutionCache?: ts.ModuleResolutionCache,
)

}

function augmentResolveModuleNames(
  host: ts.CompilerHost,
  resolvedModuleModifier: (
    resolvedModule: ts.ResolvedModule | undefined,
    moduleName: string,
  ) => ts.ResolvedModule | undefined,
  moduleResolutionCache?: ts.ModuleResolutionCache,
): void {
  if (host.resolveModuleNames) {
    const baseResolveModuleNames = host.resolveModuleNames;
    host.resolveModuleNames = function (moduleNames: string[], ...parameters) {
      return moduleNames.map((name) => {
        const result = baseResolveModuleNames.call(host, [name], ...parameters);

        return resolvedModuleModifier(result[0], name);
      });
    };
  } else {
    host.resolveModuleNames = function (
      moduleNames: string[],
      containingFile: string,
      _reusedNames: string[] | undefined,
      redirectedReference: ts.ResolvedProjectReference | undefined,
      options: ts.CompilerOptions,
    ) {
      return moduleNames.map((name) => {
        const result = ts.resolveModuleName(
          name,
          containingFile,
          options,
          host,
          moduleResolutionCache,
          redirectedReference,
        ).resolvedModule;

        return resolvedModuleModifier(result, name);
      });
    };
  }
}

/**
 * Augments a TypeScript Compiler Host's resolveModuleNames function to collect dependencies