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/// <reference path="..\harness.ts" />
namespace ts {
export function checkResolvedModule(expected: ResolvedModuleFull, actual: ResolvedModuleFull): boolean {
if (!expected === !actual) {
if (expected) {
assert.isTrue(expected.resolvedFileName === actual.resolvedFileName, `'resolvedFileName': expected '${expected.resolvedFileName}' to be equal to '${actual.resolvedFileName}'`);
assert.isTrue(expected.extension === actual.extension, `'ext': expected '${expected.extension}' to be equal to '${actual.extension}'`);
assert.isTrue(expected.isExternalLibraryImport === actual.isExternalLibraryImport, `'isExternalLibraryImport': expected '${expected.isExternalLibraryImport}' to be equal to '${actual.isExternalLibraryImport}'`);
}
return true;
}
return false;
}
export function checkResolvedModuleWithFailedLookupLocations(actual: ResolvedModuleWithFailedLookupLocations, expectedResolvedModule: ResolvedModuleFull, expectedFailedLookupLocations: string[]): void {
assert.isTrue(actual.resolvedModule !== undefined, "module should be resolved");
checkResolvedModule(actual.resolvedModule, expectedResolvedModule);
assert.deepEqual(actual.failedLookupLocations, expectedFailedLookupLocations);
}
export function createResolvedModule(resolvedFileName: string, isExternalLibraryImport = false): ResolvedModuleFull {
return { resolvedFileName, extension: extensionFromPath(resolvedFileName), isExternalLibraryImport };
}
interface File {
name: string;
content?: string;
symlinks?: string[];
}
function createModuleResolutionHost(hasDirectoryExists: boolean, ...files: File[]): ModuleResolutionHost {
const map = createMap<File>();
for (const file of files) {
map.set(file.name, file);
if (file.symlinks) {
for (const symlink of file.symlinks) {
map.set(symlink, file);
}
}
}
if (hasDirectoryExists) {
const directories = createMap<string>();
for (const f of files) {
let name = getDirectoryPath(f.name);
while (true) {
directories.set(name, name);
const baseName = getDirectoryPath(name);
if (baseName === name) {
break;
}
name = baseName;
}
}
return {
readFile,
realpath,
directoryExists: path => directories.has(path),
fileExists: path => {
assert.isTrue(directories.has(getDirectoryPath(path)), `'fileExists' '${path}' request in non-existing directory`);
return map.has(path);
}
};
}
else {
return { readFile, realpath, fileExists: path => map.has(path) };
}
function readFile(path: string): string | undefined {
const file = map.get(path);
return file && file.content;
}
function realpath(path: string): string {
return map.get(path).name;
}
}
describe("Node module resolution - relative paths", () => {
function testLoadAsFile(containingFileName: string, moduleFileNameNoExt: string, moduleName: string): void {
for (const ext of supportedTypeScriptExtensions) {
test(ext, /*hasDirectoryExists*/ false);
test(ext, /*hasDirectoryExists*/ true);
}
function test(ext: string, hasDirectoryExists: boolean) {
const containingFile = { name: containingFileName };
const moduleFile = { name: moduleFileNameNoExt + ext };
const resolution = nodeModuleNameResolver(moduleName, containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, moduleFile));
checkResolvedModule(resolution.resolvedModule, createResolvedModule(moduleFile.name));
const failedLookupLocations: string[] = [];
const dir = getDirectoryPath(containingFileName);
for (const e of supportedTypeScriptExtensions) {
if (e === ext) {
break;
}
else {
failedLookupLocations.push(normalizePath(getRootLength(moduleName) === 0 ? combinePaths(dir, moduleName) : moduleName) + e);
}
}
assert.deepEqual(resolution.failedLookupLocations, failedLookupLocations);
}
}
it("module name that starts with './' resolved as relative file name", () => {
testLoadAsFile("/foo/bar/baz.ts", "/foo/bar/foo", "./foo");
});
it("module name that starts with '../' resolved as relative file name", () => {
testLoadAsFile("/foo/bar/baz.ts", "/foo/foo", "../foo");
});
it("module name that starts with '/' script extension resolved as relative file name", () => {
testLoadAsFile("/foo/bar/baz.ts", "/foo", "/foo");
});
it("module name that starts with 'c:/' script extension resolved as relative file name", () => {
testLoadAsFile("c:/foo/bar/baz.ts", "c:/foo", "c:/foo");
});
function testLoadingFromPackageJson(containingFileName: string, packageJsonFileName: string, fieldRef: string, moduleFileName: string, moduleName: string): void {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const containingFile = { name: containingFileName };
const packageJson = { name: packageJsonFileName, content: JSON.stringify({ "typings": fieldRef }) };
const moduleFile = { name: moduleFileName };
const resolution = nodeModuleNameResolver(moduleName, containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, packageJson, moduleFile));
checkResolvedModule(resolution.resolvedModule, createResolvedModule(moduleFile.name));
// expect three failed lookup location - attempt to load module as file with all supported extensions
assert.equal(resolution.failedLookupLocations.length, supportedTypeScriptExtensions.length);
}
}
it("module name as directory - load from 'typings'", () => {
testLoadingFromPackageJson("/a/b/c/d.ts", "/a/b/c/bar/package.json", "c/d/e.d.ts", "/a/b/c/bar/c/d/e.d.ts", "./bar");
testLoadingFromPackageJson("/a/b/c/d.ts", "/a/bar/package.json", "e.d.ts", "/a/bar/e.d.ts", "../../bar");
testLoadingFromPackageJson("/a/b/c/d.ts", "/bar/package.json", "e.d.ts", "/bar/e.d.ts", "/bar");
testLoadingFromPackageJson("c:/a/b/c/d.ts", "c:/bar/package.json", "e.d.ts", "c:/bar/e.d.ts", "c:/bar");
});
function testTypingsIgnored(typings: any): void {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const containingFile = { name: "/a/b.ts" };
const packageJson = { name: "/node_modules/b/package.json", content: JSON.stringify({ "typings": typings }) };
const moduleFile = { name: "/a/b.d.ts" };
const indexPath = "/node_modules/b/index.d.ts";
const indexFile = { name: indexPath };
const resolution = nodeModuleNameResolver("b", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, packageJson, moduleFile, indexFile));
checkResolvedModule(resolution.resolvedModule, createResolvedModule(indexPath, /*isExternalLibraryImport*/ true));
}
}
it("module name as directory - handle invalid 'typings'", () => {
testTypingsIgnored(["a", "b"]);
testTypingsIgnored({ "a": "b" });
testTypingsIgnored(/*typings*/ true);
testTypingsIgnored(/*typings*/ null); // tslint:disable-line no-null-keyword
testTypingsIgnored(/*typings*/ undefined);
});
it("module name as directory - load index.d.ts", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const containingFile = { name: "/a/b/c.ts" };
const packageJson = { name: "/a/b/foo/package.json", content: JSON.stringify({ main: "/c/d" }) };
const indexFile = { name: "/a/b/foo/index.d.ts" };
const resolution = nodeModuleNameResolver("./foo", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, packageJson, indexFile));
checkResolvedModuleWithFailedLookupLocations(resolution, createResolvedModule(indexFile.name), [
"/a/b/foo.ts",
"/a/b/foo.tsx",
"/a/b/foo.d.ts",
"/a/b/foo/index.ts",
"/a/b/foo/index.tsx",
]);
}
});
});
describe("Node module resolution - non-relative paths", () => {
it("load module as file - ts files not loaded", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const containingFile = { name: "/a/b/c/d/e.ts" };
const moduleFile = { name: "/a/b/node_modules/foo.ts" };
const resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, moduleFile));
checkResolvedModuleWithFailedLookupLocations(resolution, createResolvedModule(moduleFile.name, /*isExternalLibraryImport*/ true), [
"/a/b/c/d/node_modules/foo.ts",
"/a/b/c/d/node_modules/foo.tsx",
"/a/b/c/d/node_modules/foo.d.ts",
"/a/b/c/d/node_modules/foo/package.json",
"/a/b/c/d/node_modules/foo/index.ts",
"/a/b/c/d/node_modules/foo/index.tsx",
"/a/b/c/d/node_modules/foo/index.d.ts",
"/a/b/c/d/node_modules/@types/foo.d.ts",
"/a/b/c/d/node_modules/@types/foo/package.json",
"/a/b/c/d/node_modules/@types/foo/index.d.ts",
"/a/b/c/node_modules/foo.ts",
"/a/b/c/node_modules/foo.tsx",
"/a/b/c/node_modules/foo.d.ts",
"/a/b/c/node_modules/foo/package.json",
"/a/b/c/node_modules/foo/index.ts",
"/a/b/c/node_modules/foo/index.tsx",
"/a/b/c/node_modules/foo/index.d.ts",
"/a/b/c/node_modules/@types/foo.d.ts",
"/a/b/c/node_modules/@types/foo/package.json",
"/a/b/c/node_modules/@types/foo/index.d.ts",
]);
}
});
it("load module as file", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const containingFile = { name: "/a/b/c/d/e.ts" };
const moduleFile = { name: "/a/b/node_modules/foo.d.ts" };
const resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, moduleFile));
checkResolvedModule(resolution.resolvedModule, createResolvedModule(moduleFile.name, /*isExternalLibraryImport*/ true));
}
});
it("load module as directory", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const containingFile: File = { name: "/a/node_modules/b/c/node_modules/d/e.ts" };
const moduleFile: File = { name: "/a/node_modules/foo/index.d.ts" };
const resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, moduleFile));
checkResolvedModuleWithFailedLookupLocations(resolution, createResolvedModule(moduleFile.name, /*isExternalLibraryImport*/ true), [
"/a/node_modules/b/c/node_modules/d/node_modules/foo.ts",
"/a/node_modules/b/c/node_modules/d/node_modules/foo.tsx",
"/a/node_modules/b/c/node_modules/d/node_modules/foo.d.ts",
"/a/node_modules/b/c/node_modules/d/node_modules/foo/package.json",
"/a/node_modules/b/c/node_modules/d/node_modules/foo/index.ts",
"/a/node_modules/b/c/node_modules/d/node_modules/foo/index.tsx",
"/a/node_modules/b/c/node_modules/d/node_modules/foo/index.d.ts",
"/a/node_modules/b/c/node_modules/d/node_modules/@types/foo.d.ts",
"/a/node_modules/b/c/node_modules/d/node_modules/@types/foo/package.json",
"/a/node_modules/b/c/node_modules/d/node_modules/@types/foo/index.d.ts",
"/a/node_modules/b/c/node_modules/foo.ts",
"/a/node_modules/b/c/node_modules/foo.tsx",
"/a/node_modules/b/c/node_modules/foo.d.ts",
"/a/node_modules/b/c/node_modules/foo/package.json",
"/a/node_modules/b/c/node_modules/foo/index.ts",
"/a/node_modules/b/c/node_modules/foo/index.tsx",
"/a/node_modules/b/c/node_modules/foo/index.d.ts",
"/a/node_modules/b/c/node_modules/@types/foo.d.ts",
"/a/node_modules/b/c/node_modules/@types/foo/package.json",
"/a/node_modules/b/c/node_modules/@types/foo/index.d.ts",
"/a/node_modules/b/node_modules/foo.ts",
"/a/node_modules/b/node_modules/foo.tsx",
"/a/node_modules/b/node_modules/foo.d.ts",
"/a/node_modules/b/node_modules/foo/package.json",
"/a/node_modules/b/node_modules/foo/index.ts",
"/a/node_modules/b/node_modules/foo/index.tsx",
"/a/node_modules/b/node_modules/foo/index.d.ts",
"/a/node_modules/b/node_modules/@types/foo.d.ts",
"/a/node_modules/b/node_modules/@types/foo/package.json",
"/a/node_modules/b/node_modules/@types/foo/index.d.ts",
"/a/node_modules/foo.ts",
"/a/node_modules/foo.tsx",
"/a/node_modules/foo.d.ts",
"/a/node_modules/foo/package.json",
"/a/node_modules/foo/index.ts",
"/a/node_modules/foo/index.tsx"
]);
}
});
testPreserveSymlinks(/*preserveSymlinks*/ false);
testPreserveSymlinks(/*preserveSymlinks*/ true);
function testPreserveSymlinks(preserveSymlinks: boolean) {
it(`preserveSymlinks: ${preserveSymlinks}`, () => {
const realFileName = "/linked/index.d.ts";
const symlinkFileName = "/app/node_modulex/linked/index.d.ts";
const host = createModuleResolutionHost(/*hasDirectoryExists*/ true, { name: realFileName, symlinks: [symlinkFileName] });
const resolution = nodeModuleNameResolver("linked", "/app/app.ts", { preserveSymlinks }, host);
const resolvedFileName = preserveSymlinks ? symlinkFileName : realFileName;
checkResolvedModule(resolution.resolvedModule, { resolvedFileName, isExternalLibraryImport: true, extension: Extension.Dts });
});
}
});
describe("Module resolution - relative imports", () => {
function test(files: Map<string>, currentDirectory: string, rootFiles: string[], expectedFilesCount: number, relativeNamesToCheck: string[]) {
const options: CompilerOptions = { module: ModuleKind.CommonJS };
const host: CompilerHost = {
getSourceFile: (fileName: string, languageVersion: ScriptTarget) => {
const path = normalizePath(combinePaths(currentDirectory, fileName));
const file = files.get(path);
return file && createSourceFile(fileName, file, languageVersion);
},
getDefaultLibFileName: () => "lib.d.ts",
writeFile: notImplemented,
getCurrentDirectory: () => currentDirectory,
getDirectories: () => [],
getCanonicalFileName: fileName => fileName.toLowerCase(),
getNewLine: () => "\r\n",
useCaseSensitiveFileNames: () => false,
fileExists: fileName => {
const path = normalizePath(combinePaths(currentDirectory, fileName));
return files.has(path);
},
readFile: notImplemented
};
const program = createProgram(rootFiles, options, host);
assert.equal(program.getSourceFiles().length, expectedFilesCount);
const syntacticDiagnostics = program.getSyntacticDiagnostics();
assert.equal(syntacticDiagnostics.length, 0, `expect no syntactic diagnostics, got: ${JSON.stringify(Harness.Compiler.minimalDiagnosticsToString(syntacticDiagnostics))}`);
const semanticDiagnostics = program.getSemanticDiagnostics();
assert.equal(semanticDiagnostics.length, 0, `expect no semantic diagnostics, got: ${JSON.stringify(Harness.Compiler.minimalDiagnosticsToString(semanticDiagnostics))}`);
// try to get file using a relative name
for (const relativeFileName of relativeNamesToCheck) {
assert.isTrue(program.getSourceFile(relativeFileName) !== undefined, `expected to get file by relative name, got undefined`);
}
}
it("should find all modules", () => {
const files = createMapFromTemplate({
"/a/b/c/first/shared.ts": `
class A {}
export = A`,
"/a/b/c/first/second/class_a.ts": `
import Shared = require('../shared');
import C = require('../../third/class_c');
class B {}
export = B;`,
"/a/b/c/third/class_c.ts": `
import Shared = require('../first/shared');
class C {}
export = C;
`
});
test(files, "/a/b/c/first/second", ["class_a.ts"], 3, ["../../../c/third/class_c.ts"]);
});
it("should find modules in node_modules", () => {
const files = createMapFromTemplate({
"/parent/node_modules/mod/index.d.ts": "export var x",
"/parent/app/myapp.ts": `import {x} from "mod"`
});
test(files, "/parent/app", ["myapp.ts"], 2, []);
});
it("should find file referenced via absolute and relative names", () => {
const files = createMapFromTemplate({
"/a/b/c.ts": `/// <reference path="b.ts"/>`,
"/a/b/b.ts": "var x"
});
test(files, "/a/b", ["c.ts", "/a/b/b.ts"], 2, []);
});
});
describe("Files with different casing", () => {
const library = createSourceFile("lib.d.ts", "", ScriptTarget.ES5);
function test(files: Map<string>, options: CompilerOptions, currentDirectory: string, useCaseSensitiveFileNames: boolean, rootFiles: string[], diagnosticCodes: number[]): void {
const getCanonicalFileName = createGetCanonicalFileName(useCaseSensitiveFileNames);
if (!useCaseSensitiveFileNames) {
const oldFiles = files;
files = createMap<string>();
oldFiles.forEach((file, fileName) => {
files.set(getCanonicalFileName(fileName), file);
});
}
const host: CompilerHost = {
getSourceFile: (fileName: string, languageVersion: ScriptTarget) => {
if (fileName === "lib.d.ts") {
return library;
}
const path = getCanonicalFileName(normalizePath(combinePaths(currentDirectory, fileName)));
const file = files.get(path);
return file && createSourceFile(fileName, file, languageVersion);
},
getDefaultLibFileName: () => "lib.d.ts",
writeFile: notImplemented,
getCurrentDirectory: () => currentDirectory,
getDirectories: () => [],
getCanonicalFileName,
getNewLine: () => "\r\n",
useCaseSensitiveFileNames: () => useCaseSensitiveFileNames,
fileExists: fileName => {
const path = getCanonicalFileName(normalizePath(combinePaths(currentDirectory, fileName)));
return files.has(path);
},
readFile: notImplemented
};
const program = createProgram(rootFiles, options, host);
const diagnostics = sortAndDeduplicateDiagnostics([...program.getSemanticDiagnostics(), ...program.getOptionsDiagnostics()]);
assert.equal(diagnostics.length, diagnosticCodes.length, `Incorrect number of expected diagnostics, expected ${diagnosticCodes.length}, got '${Harness.Compiler.minimalDiagnosticsToString(diagnostics)}'`);
for (let i = 0; i < diagnosticCodes.length; i++) {
assert.equal(diagnostics[i].code, diagnosticCodes[i], `Expected diagnostic code ${diagnosticCodes[i]}, got '${diagnostics[i].code}': '${diagnostics[i].messageText}'`);
}
}
it("should succeed when the same file is referenced using absolute and relative names", () => {
const files = createMapFromTemplate({
"/a/b/c.ts": `/// <reference path="d.ts"/>`,
"/a/b/d.ts": "var x"
});
test(files, { module: ts.ModuleKind.AMD }, "/a/b", /*useCaseSensitiveFileNames*/ false, ["c.ts", "/a/b/d.ts"], []);
});
it("should fail when two files used in program differ only in casing (tripleslash references)", () => {
const files = createMapFromTemplate({
"/a/b/c.ts": `/// <reference path="D.ts"/>`,
"/a/b/d.ts": "var x"
});
test(files, { module: ts.ModuleKind.AMD, forceConsistentCasingInFileNames: true }, "/a/b", /*useCaseSensitiveFileNames*/ false, ["c.ts", "d.ts"], [1149]);
});
it("should fail when two files used in program differ only in casing (imports)", () => {
const files = createMapFromTemplate({
"/a/b/c.ts": `import {x} from "D"`,
"/a/b/d.ts": "export var x"
});
test(files, { module: ts.ModuleKind.AMD, forceConsistentCasingInFileNames: true }, "/a/b", /*useCaseSensitiveFileNames*/ false, ["c.ts", "d.ts"], [1149]);
});
it("should fail when two files used in program differ only in casing (imports, relative module names)", () => {
const files = createMapFromTemplate({
"moduleA.ts": `import {x} from "./ModuleB"`,
"moduleB.ts": "export var x"
});
test(files, { module: ts.ModuleKind.CommonJS, forceConsistentCasingInFileNames: true }, "", /*useCaseSensitiveFileNames*/ false, ["moduleA.ts", "moduleB.ts"], [1149]);
});
it("should fail when two files exist on disk that differs only in casing", () => {
const files = createMapFromTemplate({
"/a/b/c.ts": `import {x} from "D"`,
"/a/b/D.ts": "export var x",
"/a/b/d.ts": "export var y"
});
test(files, { module: ts.ModuleKind.AMD }, "/a/b", /*useCaseSensitiveFileNames*/ true, ["c.ts", "d.ts"], [1149]);
});
it("should fail when module name in 'require' calls has inconsistent casing", () => {
const files = createMapFromTemplate({
"moduleA.ts": `import a = require("./ModuleC")`,
"moduleB.ts": `import a = require("./moduleC")`,
"moduleC.ts": "export var x"
});
test(files, { module: ts.ModuleKind.CommonJS, forceConsistentCasingInFileNames: true }, "", /*useCaseSensitiveFileNames*/ false, ["moduleA.ts", "moduleB.ts", "moduleC.ts"], [1149, 1149]);
});
it("should fail when module names in 'require' calls has inconsistent casing and current directory has uppercase chars", () => {
const files = createMapFromTemplate({
"/a/B/c/moduleA.ts": `import a = require("./ModuleC")`,
"/a/B/c/moduleB.ts": `import a = require("./moduleC")`,
"/a/B/c/moduleC.ts": "export var x",
"/a/B/c/moduleD.ts": `
import a = require("./moduleA");
import b = require("./moduleB");
`
});
test(files, { module: ts.ModuleKind.CommonJS, forceConsistentCasingInFileNames: true }, "/a/B/c", /*useCaseSensitiveFileNames*/ false, ["moduleD.ts"], [1149]);
});
it("should not fail when module names in 'require' calls has consistent casing and current directory has uppercase chars", () => {
const files = createMapFromTemplate({
"/a/B/c/moduleA.ts": `import a = require("./moduleC")`,
"/a/B/c/moduleB.ts": `import a = require("./moduleC")`,
"/a/B/c/moduleC.ts": "export var x",
"/a/B/c/moduleD.ts": `
import a = require("./moduleA");
import b = require("./moduleB");
`
});
test(files, { module: ts.ModuleKind.CommonJS, forceConsistentCasingInFileNames: true }, "/a/B/c", /*useCaseSensitiveFileNames*/ false, ["moduleD.ts"], []);
});
});
describe("baseUrl augmented module resolution", () => {
it("module resolution without path mappings/rootDirs", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const file1: File = { name: "/root/folder1/file1.ts" };
const file2: File = { name: "/root/folder2/file2.ts" };
const file3: File = { name: "/root/folder2/file3.ts" };
const host = createModuleResolutionHost(hasDirectoryExists, file1, file2, file3);
for (const moduleResolution of [ ModuleResolutionKind.NodeJs, ModuleResolutionKind.Classic ]) {
const options: CompilerOptions = { moduleResolution, baseUrl: "/root" };
{
const result = resolveModuleName("folder2/file2", file1.name, options, host);
checkResolvedModuleWithFailedLookupLocations(result, createResolvedModule(file2.name), []);
}
{
const result = resolveModuleName("./file3", file2.name, options, host);
checkResolvedModuleWithFailedLookupLocations(result, createResolvedModule(file3.name), []);
}
{
const result = resolveModuleName("/root/folder1/file1", file2.name, options, host);
checkResolvedModuleWithFailedLookupLocations(result, createResolvedModule(file1.name), []);
}
}
}
// add failure tests
});
it("node + baseUrl", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const main: File = { name: "/root/a/b/main.ts" };
const m1: File = { name: "/root/m1.ts" }; // load file as module
const m2: File = { name: "/root/m2/index.d.ts" }; // load folder as module
const m3: File = { name: "/root/m3/package.json", content: JSON.stringify({ typings: "dist/typings.d.ts" }) };
const m3Typings: File = { name: "/root/m3/dist/typings.d.ts" };
const m4: File = { name: "/root/node_modules/m4.ts" }; // fallback to node
const options: CompilerOptions = { moduleResolution: ModuleResolutionKind.NodeJs, baseUrl: "/root" };
const host = createModuleResolutionHost(hasDirectoryExists, main, m1, m2, m3, m3Typings, m4);
check("m1", main, m1);
check("m2", main, m2);
check("m3", main, m3Typings);
check("m4", main, m4, /*isExternalLibraryImport*/ true);
function check(name: string, caller: File, expected: File, isExternalLibraryImport = false) {
const result = resolveModuleName(name, caller.name, options, host);
checkResolvedModule(result.resolvedModule, createResolvedModule(expected.name, isExternalLibraryImport));
}
}
});
it("classic + baseUrl", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const main: File = { name: "/root/a/b/main.ts" };
const m1: File = { name: "/root/x/m1.ts" }; // load from base url
const m2: File = { name: "/m2.ts" }; // fallback to classic
const options: CompilerOptions = { moduleResolution: ModuleResolutionKind.Classic, baseUrl: "/root/x", jsx: JsxEmit.React };
const host = createModuleResolutionHost(hasDirectoryExists, main, m1, m2);
check("m1", main, m1);
check("m2", main, m2);
function check(name: string, caller: File, expected: File) {
const result = resolveModuleName(name, caller.name, options, host);
checkResolvedModule(result.resolvedModule, createResolvedModule(expected.name));
}
}
});
it("node + baseUrl + path mappings", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const main: File = { name: "/root/folder1/main.ts" };
const file1: File = { name: "/root/folder1/file1.ts" };
const file2: File = { name: "/root/generated/folder1/file2.ts" }; // load remapped file as module
const file3: File = { name: "/root/generated/folder2/file3/index.d.ts" }; // load folder a module
const file4Typings: File = { name: "/root/generated/folder2/file4/package.json", content: JSON.stringify({ typings: "dist/types.d.ts" }) };
const file4: File = { name: "/root/generated/folder2/file4/dist/types.d.ts" }; // load file pointed by typings
const file5: File = { name: "/root/someanotherfolder/file5/index.d.ts" }; // load remapped module from folder
const file6: File = { name: "/root/node_modules/file6.ts" }; // fallback to node
const host = createModuleResolutionHost(hasDirectoryExists, file1, file2, file3, file4, file4Typings, file5, file6);
const options: CompilerOptions = {
moduleResolution: ModuleResolutionKind.NodeJs,
baseUrl: "/root",
jsx: JsxEmit.React,
paths: {
"*": [
"*",
"generated/*"
],
"somefolder/*": [
"someanotherfolder/*"
]
}
};
check("folder1/file1", file1, []);
check("folder1/file2", file2, [
// first try the '*'
"/root/folder1/file2.ts",
"/root/folder1/file2.tsx",
"/root/folder1/file2.d.ts",
"/root/folder1/file2/package.json",
"/root/folder1/file2/index.ts",
"/root/folder1/file2/index.tsx",
"/root/folder1/file2/index.d.ts",
// then first attempt on 'generated/*' was successful
]);
check("folder2/file3", file3, [
// first try '*'
"/root/folder2/file3.ts",
"/root/folder2/file3.tsx",
"/root/folder2/file3.d.ts",
"/root/folder2/file3/package.json",
"/root/folder2/file3/index.ts",
"/root/folder2/file3/index.tsx",
"/root/folder2/file3/index.d.ts",
// then use remapped location
"/root/generated/folder2/file3.ts",
"/root/generated/folder2/file3.tsx",
"/root/generated/folder2/file3.d.ts",
"/root/generated/folder2/file3/package.json",
"/root/generated/folder2/file3/index.ts",
"/root/generated/folder2/file3/index.tsx",
// success on index.d.ts
]);
check("folder2/file4", file4, [
// first try '*'
"/root/folder2/file4.ts",
"/root/folder2/file4.tsx",
"/root/folder2/file4.d.ts",
"/root/folder2/file4/package.json",
"/root/folder2/file4/index.ts",
"/root/folder2/file4/index.tsx",
"/root/folder2/file4/index.d.ts",
// try to load from file from remapped location
"/root/generated/folder2/file4.ts",
"/root/generated/folder2/file4.tsx",
"/root/generated/folder2/file4.d.ts",
// success on loading as from folder
]);
check("somefolder/file5", file5, [
// load from remapped location
// first load from fle
"/root/someanotherfolder/file5.ts",
"/root/someanotherfolder/file5.tsx",
"/root/someanotherfolder/file5.d.ts",
// load from folder
"/root/someanotherfolder/file5/package.json",
"/root/someanotherfolder/file5/index.ts",
"/root/someanotherfolder/file5/index.tsx",
// success on index.d.ts
]);
check("file6", file6, [
// first try *
// load from file
"/root/file6.ts",
"/root/file6.tsx",
"/root/file6.d.ts",
// load from folder
"/root/file6/package.json",
"/root/file6/index.ts",
"/root/file6/index.tsx",
"/root/file6/index.d.ts",
// then try 'generated/*'
// load from file
"/root/generated/file6.ts",
"/root/generated/file6.tsx",
"/root/generated/file6.d.ts",
// load from folder
"/root/generated/file6/package.json",
"/root/generated/file6/index.ts",
"/root/generated/file6/index.tsx",
"/root/generated/file6/index.d.ts",
// fallback to standard node behavior
// load from file
"/root/folder1/node_modules/file6.ts",
"/root/folder1/node_modules/file6.tsx",
"/root/folder1/node_modules/file6.d.ts",
// load from folder
"/root/folder1/node_modules/file6/package.json",
"/root/folder1/node_modules/file6/index.ts",
"/root/folder1/node_modules/file6/index.tsx",
"/root/folder1/node_modules/file6/index.d.ts",
"/root/folder1/node_modules/@types/file6.d.ts",
"/root/folder1/node_modules/@types/file6/package.json",
"/root/folder1/node_modules/@types/file6/index.d.ts",
// success on /root/node_modules/file6.ts
], /*isExternalLibraryImport*/ true);
function check(name: string, expected: File, expectedFailedLookups: string[], isExternalLibraryImport = false) {
const result = resolveModuleName(name, main.name, options, host);
checkResolvedModuleWithFailedLookupLocations(result, createResolvedModule(expected.name, isExternalLibraryImport), expectedFailedLookups);
}
}
});
it ("classic + baseUrl + path mappings", () => {
// classic mode does not use directoryExists
test(/*hasDirectoryExists*/ false);
function test(hasDirectoryExists: boolean) {
const main: File = { name: "/root/folder1/main.ts" };
const file1: File = { name: "/root/folder1/file1.ts" };
const file2: File = { name: "/root/generated/folder1/file2.ts" };
const file3: File = { name: "/folder1/file3.ts" }; // fallback to classic
const host = createModuleResolutionHost(hasDirectoryExists, file1, file2, file3);
const options: CompilerOptions = {
moduleResolution: ModuleResolutionKind.Classic,
baseUrl: "/root",
jsx: JsxEmit.React,
paths: {
"*": [
"*",
"generated/*"
],
"somefolder/*": [
"someanotherfolder/*"
]
}
};
check("folder1/file1", file1, []);
check("folder1/file2", file2, [
// first try '*'
"/root/folder1/file2.ts",
"/root/folder1/file2.tsx",
"/root/folder1/file2.d.ts",
// success when using 'generated/*'
]);
check("folder1/file3", file3, [
// first try '*'
"/root/folder1/file3.ts",
"/root/folder1/file3.tsx",
"/root/folder1/file3.d.ts",
// then try 'generated/*'
"/root/generated/folder1/file3.ts",
"/root/generated/folder1/file3.tsx",
"/root/generated/folder1/file3.d.ts",
// fallback to classic
"/root/folder1/folder1/file3.ts",
"/root/folder1/folder1/file3.tsx",
"/root/folder1/folder1/file3.d.ts",
"/root/folder1/file3.ts",
"/root/folder1/file3.tsx",
"/root/folder1/file3.d.ts",
]);
function check(name: string, expected: File, expectedFailedLookups: string[]) {
const result = resolveModuleName(name, main.name, options, host);
checkResolvedModuleWithFailedLookupLocations(result, createResolvedModule(expected.name), expectedFailedLookups);
}
}
});
it ("node + rootDirs", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const file1: File = { name: "/root/folder1/file1.ts" };
const file1_1: File = { name: "/root/folder1/file1_1/index.d.ts" };
const file2: File = { name: "/root/generated/folder1/file2.ts" };
const file3: File = { name: "/root/generated/folder2/file3.ts" };
const host = createModuleResolutionHost(hasDirectoryExists, file1, file1_1, file2, file3);
const options: CompilerOptions = {
moduleResolution: ModuleResolutionKind.NodeJs,
rootDirs: [
"/root",
"/root/generated/"
]
};
check("./file2", file1, file2, [
// first try current location
// load from file
"/root/folder1/file2.ts",
"/root/folder1/file2.tsx",
"/root/folder1/file2.d.ts",
// load from folder
"/root/folder1/file2/package.json",
"/root/folder1/file2/index.ts",
"/root/folder1/file2/index.tsx",
"/root/folder1/file2/index.d.ts",
// success after using alternative rootDir entry
]);
check("../folder1/file1", file3, file1, [
// first try current location
// load from file
"/root/generated/folder1/file1.ts",
"/root/generated/folder1/file1.tsx",
"/root/generated/folder1/file1.d.ts",
// load from module
"/root/generated/folder1/file1/package.json",
"/root/generated/folder1/file1/index.ts",
"/root/generated/folder1/file1/index.tsx",
"/root/generated/folder1/file1/index.d.ts",
// success after using alternative rootDir entry
]);
check("../folder1/file1_1", file3, file1_1, [
// first try current location
// load from file
"/root/generated/folder1/file1_1.ts",
"/root/generated/folder1/file1_1.tsx",
"/root/generated/folder1/file1_1.d.ts",
// load from folder
"/root/generated/folder1/file1_1/package.json",
"/root/generated/folder1/file1_1/index.ts",
"/root/generated/folder1/file1_1/index.tsx",
"/root/generated/folder1/file1_1/index.d.ts",
// try alternative rootDir entry
// load from file
"/root/folder1/file1_1.ts",
"/root/folder1/file1_1.tsx",
"/root/folder1/file1_1.d.ts",
// load from directory
"/root/folder1/file1_1/package.json",
"/root/folder1/file1_1/index.ts",
"/root/folder1/file1_1/index.tsx",
// success on loading '/root/folder1/file1_1/index.d.ts'
]);
function check(name: string, container: File, expected: File, expectedFailedLookups: string[]) {
const result = resolveModuleName(name, container.name, options, host);
checkResolvedModuleWithFailedLookupLocations(result, createResolvedModule(expected.name), expectedFailedLookups);
}
}
});
it ("classic + rootDirs", () => {
test(/*hasDirectoryExists*/ false);
function test(hasDirectoryExists: boolean) {
const file1: File = { name: "/root/folder1/file1.ts" };
const file2: File = { name: "/root/generated/folder1/file2.ts" };
const file3: File = { name: "/root/generated/folder2/file3.ts" };
const file4: File = { name: "/folder1/file1_1.ts" };
const host = createModuleResolutionHost(hasDirectoryExists, file1, file2, file3, file4);
const options: CompilerOptions = {
moduleResolution: ModuleResolutionKind.Classic,
jsx: JsxEmit.React,
rootDirs: [
"/root",
"/root/generated/"
]
};
check("./file2", file1, file2, [
// first load from current location
"/root/folder1/file2.ts",
"/root/folder1/file2.tsx",
"/root/folder1/file2.d.ts",
// then try alternative rootDir entry
]);
check("../folder1/file1", file3, file1, [
// first load from current location
"/root/generated/folder1/file1.ts",
"/root/generated/folder1/file1.tsx",
"/root/generated/folder1/file1.d.ts",
// then try alternative rootDir entry
]);
check("folder1/file1_1", file3, file4, [
// current location
"/root/generated/folder2/folder1/file1_1.ts",
"/root/generated/folder2/folder1/file1_1.tsx",
"/root/generated/folder2/folder1/file1_1.d.ts",
// other entry in rootDirs
"/root/generated/folder1/file1_1.ts",
"/root/generated/folder1/file1_1.tsx",
"/root/generated/folder1/file1_1.d.ts",
// fallback
"/root/folder1/file1_1.ts",
"/root/folder1/file1_1.tsx",
"/root/folder1/file1_1.d.ts",
// found one
]);
function check(name: string, container: File, expected: File, expectedFailedLookups: string[]) {
const result = resolveModuleName(name, container.name, options, host);
checkResolvedModuleWithFailedLookupLocations(result, createResolvedModule(expected.name), expectedFailedLookups);
}
}
});
it ("nested node module", () => {
test(/*hasDirectoryExists*/ false);
test(/*hasDirectoryExists*/ true);
function test(hasDirectoryExists: boolean) {
const app: File = { name: "/root/src/app.ts" };
const libsPackage: File = { name: "/root/src/libs/guid/package.json", content: JSON.stringify({ typings: "dist/guid.d.ts" }) };
const libsTypings: File = { name: "/root/src/libs/guid/dist/guid.d.ts" };
const host = createModuleResolutionHost(hasDirectoryExists, app, libsPackage, libsTypings);
const options: CompilerOptions = {
moduleResolution: ModuleResolutionKind.NodeJs,
baseUrl: "/root",
paths: {
"libs/guid": [ "src/libs/guid" ]
}
};
const result = resolveModuleName("libs/guid", app.name, options, host);
checkResolvedModuleWithFailedLookupLocations(result, createResolvedModule(libsTypings.name), [
// first try to load module as file
"/root/src/libs/guid.ts",
"/root/src/libs/guid.tsx",
"/root/src/libs/guid.d.ts",
]);
}
});
});
describe("ModuleResolutionHost.directoryExists", () => {
it("No 'fileExists' calls if containing directory is missing", () => {
const host: ModuleResolutionHost = {
readFile: notImplemented,
fileExists: notImplemented,
directoryExists: _ => false
};
const result = resolveModuleName("someName", "/a/b/c/d", { moduleResolution: ModuleResolutionKind.NodeJs }, host);
assert(!result.resolvedModule);
});
});
describe("Type reference directive resolution: ", () => {
function test(typesRoot: string, typeDirective: string, primary: boolean, initialFile: File, targetFile: File, ...otherFiles: File[]) {
const host = createModuleResolutionHost(/*hasDirectoryExists*/ false, ...[initialFile, targetFile].concat(...otherFiles));
const result = resolveTypeReferenceDirective(typeDirective, initialFile.name, { typeRoots: [typesRoot] }, host);
assert(result.resolvedTypeReferenceDirective.resolvedFileName !== undefined, "expected type directive to be resolved");
assert.equal(result.resolvedTypeReferenceDirective.resolvedFileName, targetFile.name, "unexpected result of type reference resolution");
assert.equal(result.resolvedTypeReferenceDirective.primary, primary, "unexpected 'primary' value");
}
it("Can be resolved from primary location", () => {
{
const f1 = { name: "/root/src/app.ts" };
const f2 = { name: "/root/src/types/lib/index.d.ts" };
test(/*typesRoot*/"/root/src/types", /* typeDirective */"lib", /*primary*/ true, f1, f2);
}
{
const f1 = { name: "/root/src/app.ts" };
const f2 = { name: "/root/src/types/lib/typings/lib.d.ts" };
const packageFile = { name: "/root/src/types/lib/package.json", content: JSON.stringify({ types: "typings/lib.d.ts" }) };
test(/*typesRoot*/"/root/src/types", /* typeDirective */"lib", /*primary*/ true, f1, f2, packageFile);
}
{
const f1 = { name: "/root/src/app.ts" };
const f2 = { name: "/root/src/node_modules/lib/index.d.ts" };
test(/*typesRoot*/"/root/src/types", /* typeDirective */"lib", /*primary*/ false, f1, f2);
}
{
const f1 = { name: "/root/src/app.ts" };
const f2 = { name: "/root/src/node_modules/lib/typings/lib.d.ts" };
const packageFile = { name: "/root/src/node_modules/lib/package.json", content: JSON.stringify({ types: "typings/lib.d.ts" }) };
test(/*typesRoot*/"/root/src/types", /* typeDirective */"lib", /*primary*/ false, f1, f2, packageFile);
}
{
const f1 = { name: "/root/src/app.ts" };
const f2 = { name: "/root/src/node_modules/@types/lib/index.d.ts" };
test(/*typesRoot*/"/root/src/types", /* typeDirective */"lib", /*primary*/ false, f1, f2);
}
{
const f1 = { name: "/root/src/app.ts" };
const f2 = { name: "/root/src/node_modules/@types/lib/typings/lib.d.ts" };