plugin-ordering.test.js

import * as babel from "@babel/core";
import proposalClassStaticBlock from "..";

describe("plugin ordering", () => {
  it("should work when @babel/plugin-proposal-class-static-block is after class features plugin", () => {
    const source = `class Foo {
      static {
        this.foo = Foo.bar;
      }
      static bar = 42;
    }
    `;
    expect(
      babel.transform(source, {
        filename: "example.js",
        highlightCode: false,
        configFile: false,
        babelrc: false,
        plugins: [
          "@babel/plugin-proposal-class-properties",
          proposalClassStaticBlock,
        ],
      }),
    ).toMatchInlineSnapshot(`
      Object {
        "ast": null,
        "code": "function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

      class Foo {}

      var _ = {
        writable: true,
        value: (() => {
          Foo.foo = Foo.bar;
        })()
      };

      _defineProperty(Foo, \\"bar\\", 42);",
        "map": null,
        "metadata": Object {},
        "options": Object {
          "assumptions": Object {},
          "babelrc": false,
          "browserslistConfigFile": false,
          "cloneInputAst": true,
          "configFile": false,
          "cwd": "/home/nicolo/Documenti/dev/babel/babel",
          "envName": "test",
          "filename": "/home/nicolo/Documenti/dev/babel/babel/example.js",
          "generatorOpts": Object {
            "auxiliaryCommentAfter": undefined,
            "auxiliaryCommentBefore": undefined,
            "comments": true,
            "compact": "auto",
            "filename": "/home/nicolo/Documenti/dev/babel/babel/example.js",
            "minified": undefined,
            "retainLines": undefined,
            "shouldPrintComment": undefined,
            "sourceFileName": "example.js",
            "sourceMaps": false,
            "sourceRoot": undefined,
          },
          "highlightCode": false,
          "parserOpts": Object {
            "plugins": Array [
              "classProperties",
              "classPrivateProperties",
              "classStaticBlock",
            ],
            "sourceFileName": "/home/nicolo/Documenti/dev/babel/babel/example.js",
            "sourceType": "module",
          },
          "passPerPreset": false,
          "plugins": Array [
            Plugin {
              "generatorOverride": undefined,
              "key": "proposal-class-properties",
              "manipulateOptions": [Function],
              "options": Object {},
              "parserOverride": undefined,
              "post": undefined,
              "pre": [Function],
              "visitor": Object {
                "ClassDeclaration": Object {
                  "enter": Array [
                    [Function],
                  ],
                },
                "ClassExpression": Object {
                  "enter": Array [
                    [Function],
                  ],
                },
                "ExportDefaultDeclaration": Object {
                  "enter": Array [
                    [Function],
                  ],
                },
                "PrivateName": Object {
                  "enter": Array [
                    [Function],
                  ],
                },
                "_exploded": true,
                "_verified": true,
              },
            },
            Plugin {
              "generatorOverride": undefined,
              "key": "proposal-class-static-block",
              "manipulateOptions": [Function],
              "options": Object {},
              "parserOverride": undefined,
              "post": undefined,
              "pre": undefined,
              "visitor": Object {
                "Program": Object {
                  "enter": Array [
                    [Function],
                  ],
                },
                "_exploded": Object {},
                "_verified": Object {},
              },
            },
          ],
          "presets": Array [],
          "root": "/home/nicolo/Documenti/dev/babel/babel",
          "rootMode": "root",
          "targets": Object {},
        },
        "sourceType": "module",
      }
    `);
  });
});