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"use strict";
const fs = require("fs");
const path = require("path");
const { CachedInputFileSystem, ResolverFactory } = require("../");
const nodeFileSystem = new CachedInputFileSystem(fs, 4000);
const fixture = path.resolve(__dirname, "fixtures", "pnp");
let isAdmin = false;
try {
fs.symlinkSync("dir", path.resolve(fixture, "pkg/symlink"), "dir");
isAdmin = true;
} catch (_err) {
// ignore
}
try {
fs.unlinkSync(path.resolve(fixture, "pkg/symlink"));
} catch (_err) {
isAdmin = false;
// ignore
}
describe("pnp", () => {
let pnpApi;
let resolverFuzzy;
let resolver;
if (isAdmin) {
beforeAll(() => {
fs.symlinkSync("dir", path.resolve(fixture, "pkg/symlink"), "dir");
});
}
beforeEach(() => {
// eslint-disable-next-line jsdoc/reject-any-type
pnpApi = /** @type {any} */ ({
mocks: new Map(),
ignoredIssuers: new Set(),
resolveToUnqualified(request, issuer) {
if (pnpApi.ignoredIssuers.has(issuer)) {
return null;
} else if (pnpApi.mocks.has(request)) {
return pnpApi.mocks.get(request);
}
const err =
/** @type {Error & { code: string, pnpCode: string }} */
(new Error("No way"));
err.code = "MODULE_NOT_FOUND";
err.pnpCode = "UNDECLARED_DEPENDENCY";
throw err;
},
});
resolverFuzzy = ResolverFactory.createResolver({
extensions: [".ts", ".js"],
aliasFields: ["browser"],
fileSystem: nodeFileSystem,
alias: {
alias: path.resolve(fixture, "pkg"),
},
pnpApi,
modules: ["node_modules", path.resolve(fixture, "../pnp-a")],
});
resolver = ResolverFactory.createResolver({
aliasFields: ["browser"],
fileSystem: nodeFileSystem,
fullySpecified: true,
alias: {
alias: path.resolve(fixture, "pkg"),
},
pnpApi,
modules: [
"alternative-modules",
"node_modules",
path.resolve(fixture, "../pnp-a"),
],
});
});
if (isAdmin) {
afterAll(() => {
fs.unlinkSync(path.resolve(fixture, "pkg/symlink"));
});
}
it("should resolve by going through the pnp api", (done) => {
pnpApi.mocks.set("pkg", path.resolve(fixture, "pkg"));
resolver.resolve({}, __dirname, "pkg/dir/index.js", {}, (err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "pkg/dir/index.js"));
done();
});
});
it("should not resolve a not fully specified request when fullySpecified is set", (done) => {
pnpApi.mocks.set("pkg", path.resolve(fixture, "pkg"));
resolver.resolve({}, __dirname, "pkg/dir/index", {}, (err, _result) => {
expect(err).toBeInstanceOf(Error);
done();
});
});
it("should track dependency to the pnp api", (done) => {
pnpApi.mocks.set("pkg", path.resolve(fixture, "pkg"));
pnpApi.mocks.set("pnpapi", path.resolve(fixture, ".pnp.js"));
const fileDependencies = new Set();
resolver.resolve(
{},
__dirname,
"pkg/dir/index.js",
{ fileDependencies },
(err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "pkg/dir/index.js"));
expect([...fileDependencies]).toContainEqual(
path.resolve(fixture, ".pnp.js"),
);
done();
},
);
});
it("should resolve module names with package.json", (done) => {
pnpApi.mocks.set("pkg", path.resolve(fixture, "pkg"));
resolver.resolve({}, __dirname, "pkg", {}, (err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "pkg/main.js"));
done();
});
});
it("should resolve namespaced module names", (done) => {
pnpApi.mocks.set("@user/pkg", path.resolve(fixture, "pkg"));
resolver.resolve({}, __dirname, "@user/pkg", {}, (err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "pkg/main.js"));
done();
});
});
it(
"should not resolve symlinks",
isAdmin
? (done) => {
pnpApi.mocks.set("pkg", path.resolve(fixture, "pkg"));
resolverFuzzy.resolve(
{},
__dirname,
"pkg/symlink",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(
path.resolve(fixture, "pkg/symlink/index.js"),
);
done();
},
);
}
: undefined,
);
it("should properly deal with other extensions", (done) => {
pnpApi.mocks.set("@user/pkg", path.resolve(fixture, "pkg"));
resolverFuzzy.resolve(
{},
__dirname,
"@user/pkg/typescript",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(
path.resolve(fixture, "pkg/typescript/index.ts"),
);
done();
},
);
});
it("should properly deal package.json alias", (done) => {
pnpApi.mocks.set("pkg", path.resolve(fixture, "pkg"));
resolverFuzzy.resolve(
{},
__dirname,
"pkg/package-alias",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(
path.resolve(fixture, "pkg/package-alias/browser.js"),
);
done();
},
);
});
it("should prefer pnp resolves over normal modules", (done) => {
pnpApi.mocks.set("m1", path.resolve(fixture, "../node_modules/m2"));
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"m1/b.js",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(
path.resolve(fixture, "../node_modules/m2/b.js"),
);
done();
},
);
});
it("should prefer alternative module directories over pnp", (done) => {
pnpApi.mocks.set("m1", path.resolve(fixture, "../node_modules/m2"));
resolver.resolve(
{},
path.resolve(__dirname, "fixtures/prefer-pnp"),
"m1/b.js",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(
path.resolve(
__dirname,
"fixtures/prefer-pnp/alternative-modules/m1/b.js",
),
);
done();
},
);
});
it("should prefer alias over pnp resolves", (done) => {
pnpApi.mocks.set("alias", path.resolve(fixture, "pkg/dir"));
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"alias/index.js",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "pkg/index.js"));
done();
},
);
});
it("should prefer pnp over modules after node_modules", (done) => {
pnpApi.mocks.set("m2", path.resolve(fixture, "pkg"));
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"m2/index.js",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "pkg/index.js"));
done();
},
);
});
it("should fallback to alternatives when pnp resolving fails", (done) => {
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"m2/a.js",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "../pnp-a/m2/a.js"));
done();
},
);
});
it("should fallback to alternatives when pnp doesn't manage the issuer", (done) => {
pnpApi.ignoredIssuers.add(`${path.resolve(__dirname, "fixtures")}/`);
// Add the wrong path on purpose to make sure the issuer is ignored
pnpApi.mocks.set("m2", path.resolve(fixture, "pkg"));
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"m2/b.js",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(
path.resolve(__dirname, "fixtures/node_modules/m2/b.js"),
);
done();
},
);
});
it("should handle the exports field when using PnP", (done) => {
pnpApi.mocks.set("m1", path.resolve(fixture, "pkg3"));
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"m1",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "pkg3/a.js"));
done();
},
);
});
it("should handle the exports field when using PnP (with sub path)", (done) => {
pnpApi.mocks.set("@user/m1", path.resolve(fixture, "pkg3"));
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"@user/m1/x",
{},
(err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "pkg3/a.js"));
done();
},
);
});
it("falls through when pnpApi throws an UNDECLARED_DEPENDENCY error and logs each line", (done) => {
const pnpApi = {
resolveToUnqualified() {
const err =
/** @type {Error & { code: string, pnpCode: string }} */
(new Error("line-1\nline-2"));
err.code = "MODULE_NOT_FOUND";
err.pnpCode = "UNDECLARED_DEPENDENCY";
throw err;
},
};
const resolver = ResolverFactory.createResolver({
fileSystem: nodeFileSystem,
pnpApi,
modules: ["node_modules", path.resolve(fixture, "../pnp-a")],
});
const logs = [];
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"m2/a.js",
{ log: (m) => logs.push(m) },
(err, result) => {
if (err) return done(err);
expect(result).toEqual(path.resolve(fixture, "../pnp-a/m2/a.js"));
expect(
logs.some((l) => l.includes("request is not managed by the pnpapi")),
).toBe(true);
done();
},
);
});
it("propagates unexpected errors from pnpApi", (done) => {
const pnpApi = {
resolveToUnqualified() {
throw new Error("unexpected-pnp");
},
};
const resolver = ResolverFactory.createResolver({
fileSystem: nodeFileSystem,
pnpApi,
modules: ["node_modules", path.resolve(fixture, "../pnp-a")],
});
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"m2/a.js",
{},
(err) => {
expect(err).toBeTruthy();
expect(/** @type {Error} */ (err).message).toBe("unexpected-pnp");
done();
},
);
});
it("returns an error when neither pnp nor the alternate find a result", (done) => {
const pnpApi = {
resolveToUnqualified() {
return null;
},
};
const resolver = ResolverFactory.createResolver({
fileSystem: nodeFileSystem,
pnpApi,
modules: ["node_modules"],
});
resolver.resolve(
{},
path.resolve(__dirname, "fixtures"),
"no-such-package",
{},
(err) => {
expect(err).toBeInstanceOf(Error);
done();
},
);
});
it("attempts the process.versions.pnp auto-detection path", () => {
// eslint-disable-next-line jsdoc/reject-any-type
const { pnp: originalPnp } = /** @type {any} */ (process.versions);
try {
Object.defineProperty(process.versions, "pnp", {
value: "0.0.0",
configurable: true,
});
expect(() =>
ResolverFactory.createResolver({ fileSystem: nodeFileSystem }),
).not.toThrow();
} finally {
if (originalPnp === undefined) {
// eslint-disable-next-line jsdoc/reject-any-type
delete (/** @type {any} */ (process.versions).pnp);
} else {
Object.defineProperty(process.versions, "pnp", {
value: originalPnp,
configurable: true,
});
}
}
});
});