babel/packages/babel-core/test/resolution.js

import assert from "assert";
import * as babel from "../lib/index";
import path from "path";

describe("addon resolution", function () {
  const base = path.join(__dirname, "fixtures", "resolution");

  beforeEach(function() {
    this.cwd = process.cwd();
    process.chdir(base);
  });

  afterEach(function() {
    process.chdir(this.cwd);
  });

  it("should find module: presets", function() {
    process.chdir("module-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "module:preset",
      ],
    });
  });

  it("should find module: plugins", function() {
    process.chdir("module-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "module:plugin",
      ],
    });
  });

  it("should find standard presets", function() {
    process.chdir("standard-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "mod",
      ],
    });
  });

  it("should find standard plugins", function() {
    process.chdir("standard-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "mod",
      ],
    });
  });

  it("should find standard presets with an existing prefix", function() {
    process.chdir("standard-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "babel-preset-mod",
      ],
    });
  });

  it("should find standard plugins with an existing prefix", function() {
    process.chdir("standard-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "babel-plugin-mod",
      ],
    });
  });

  it("should find @babel scoped presets", function() {
    process.chdir("babel-org-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "@babel/foo",
      ],
    });
  });

  it("should find @babel scoped plugins", function() {
    process.chdir("babel-org-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "@babel/foo",
      ],
    });
  });

  it("should find @babel scoped presets with an existing prefix", function() {
    process.chdir("babel-org-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "@babel/preset-foo",
      ],
    });
  });

  it("should find @babel scoped plugins", function() {
    process.chdir("babel-org-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "@babel/plugin-foo",
      ],
    });
  });

  it("should find @foo scoped presets", function() {
    process.chdir("foo-org-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "@foo/mod",
      ],
    });
  });

  it("should find @foo scoped plugins", function() {
    process.chdir("foo-org-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "@foo/mod",
      ],
    });
  });

  it("should find @foo scoped presets with an existing prefix", function() {
    process.chdir("foo-org-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "@foo/babel-preset-mod",
      ],
    });
  });

  it("should find @foo scoped plugins with an existing prefix", function() {
    process.chdir("foo-org-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "@foo/babel-plugin-mod",
      ],
    });
  });

  it("should find relative path presets", function() {
    process.chdir("relative-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "./dir/preset.js",
      ],
    });
  });

  it("should find relative path plugins", function() {
    process.chdir("relative-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "./dir/plugin.js",
      ],
    });
  });

  it("should find module file presets", function() {
    process.chdir("nested-module-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "mod/preset",
      ],
    });
  });

  it("should find module file plugins", function() {
    process.chdir("nested-module-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "mod/plugin",
      ],
    });
  });

  it("should find @foo scoped module file presets", function() {
    process.chdir("scoped-nested-module-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "@foo/mod/preset",
      ],
    });
  });

  it("should find @foo scoped module file plugins", function() {
    process.chdir("scoped-nested-module-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "@foo/mod/plugin",
      ],
    });
  });

  it("should find @babel scoped module file presets", function() {
    process.chdir("babel-scoped-nested-module-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      presets: [
        "@babel/mod/preset",
      ],
    });
  });

  it("should find @babel scoped module file plugins", function() {
    process.chdir("babel-scoped-nested-module-paths");

    babel.transform("", {
      filename: "filename.js",
      babelrc: false,
      plugins: [
        "@babel/mod/plugin",
      ],
    });
  });

  it("should throw about module: usage for presets", function() {
    process.chdir("throw-module-paths");

    assert.throws(() => {
      babel.transform("", {
        filename: "filename.js",
        babelrc: false,
        presets: [
          "foo",
        ],
      });
      // eslint-disable-next-line max-len
    }, /Cannot find module 'babel-preset-foo'.*\n- If you want to resolve "foo", use "module:foo"/);
  });

  it("should throw about module: usage for plugins", function() {
    process.chdir("throw-module-paths");

    assert.throws(() => {
      babel.transform("", {
        filename: "filename.js",
        babelrc: false,
        plugins: [
          "foo",
        ],
      });
      // eslint-disable-next-line max-len
    }, /Cannot find module 'babel-plugin-foo'.*\n- If you want to resolve "foo", use "module:foo"/);
  });

  it("should throw about @babel usage for presets", function() {
    process.chdir("throw-babel-paths");

    assert.throws(() => {
      babel.transform("", {
        filename: "filename.js",
        babelrc: false,
        presets: [
          "foo",
        ],
      });
      // eslint-disable-next-line max-len
    }, /Cannot find module 'babel-preset-foo'.*\n- Did you mean "@babel\/foo"\?/);
  });

  it("should throw about @babel usage for plugins", function() {
    process.chdir("throw-babel-paths");

    assert.throws(() => {
      babel.transform("", {
        filename: "filename.js",
        babelrc: false,
        plugins: [
          "foo",
        ],
      });
      // eslint-disable-next-line max-len
    }, /Cannot find module 'babel-plugin-foo'.*\n- Did you mean "@babel\/foo"\?/);
  });

  it("should throw about passing a preset as a plugin", function() {
    process.chdir("throw-opposite-paths");

    assert.throws(() => {
      babel.transform("", {
        filename: "filename.js",
        babelrc: false,
        presets: [
          "testplugin",
        ],
      });
      // eslint-disable-next-line max-len
    }, /Cannot find module 'babel-preset-testplugin'.*\n- Did you accidentally pass a preset as a plugin\?/);
  });

  it("should throw about passing a plugin as a preset", function() {
    process.chdir("throw-opposite-paths");

    assert.throws(() => {
      babel.transform("", {
        filename: "filename.js",
        babelrc: false,
        plugins: [
          "testpreset",
        ],
      });
      // eslint-disable-next-line max-len
    }, /Cannot find module 'babel-plugin-testpreset'.*\n- Did you accidentally pass a plugin as a preset\?/);
  });

  it("should throw about missing presets", function() {
    process.chdir("throw-missing-paths");

    assert.throws(() => {
      babel.transform("", {
        filename: "filename.js",
        babelrc: false,
        presets: [
          "foo",
        ],
      });
    }, /Cannot find module 'babel-preset-foo'/);
  });

  it("should throw about missing plugins", function() {
    process.chdir("throw-missing-paths");

    assert.throws(() => {
      babel.transform("", {
        filename: "filename.js",
        babelrc: false,
        plugins: [
          "foo",
        ],
      });
    }, /Cannot find module 'babel-plugin-foo'/);
  });
});