[Development] Update tooling for easier development and style consistency

[codemod-js]

[Development] Update tooling for easier development and style consistency

[eventualbuddha]

I’ve used prettier before and would be happy to have it in this project. I’ve never really used jest before, but would be interested in hearing what that’s like.

[mcMickJuice]

jest is awesome. I'll create a POC branch with highlights of why jest is so dope.

[eventualbuddha]

I made a branch with a work in progress conversion to jest. Overall I like it, but I think the require clobbering may interfere with the require clobbering that codemod does. I get this:

 FAIL  src/__tests__/CLI.test.ts
  ● CLI › can load plugins written with ES modules by default

    /Users/donovan/src/babel-codemod/test/fixtures/plugin/increment-export-default.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export default function() {
                                                                                             ^^^^^^

    SyntaxError: Unexpected token export



      at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/script_transformer.js:318:17)
      at PluginLoader.<anonymous> (src/PluginLoader.ts:20:28)
      at fulfilled (src/PluginLoader.ts:4:56)

  ● CLI › can load plugins with multiple files with ES modules by default`

    /Users/donovan/src/babel-codemod/test/fixtures/plugin/increment-export-default-multiple/increment-export-default.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import incrementValue from './increment-value'
                                                                                             ^^^^^^

    SyntaxError: Unexpected token import



      at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/script_transformer.js:318:17)
      at PluginLoader.<anonymous> (src/PluginLoader.ts:20:28)
      at fulfilled (src/PluginLoader.ts:4:56)

  ● CLI › fails when specifying --find-babel-config as there are no plugins loaded

    AssertionError [ERR_ASSERTION]: error should reference invalid syntax: TypeError: rawPlugin is not a function

      27 |     readonly resolvedPath?: string
      28 |   ) {
    > 29 |     let instance = rawPlugin(Babel);
      30 |
      31 |     if (instance.name) {
      32 |       this.declaredName = instance.name;

      at new Plugin (src/Options.ts:29:20)
      at Options.<anonymous> (src/Options.ts:72:18)
      at fulfilled (src/Options.ts:4:56)
      at Object.<anonymous> (src/__tests__/CLI.test.ts:249:7)
          at Generator.throw (<anonymous>)
      at rejected (src/__tests__/CLI.test.ts:5:63)

  ● CLI › can load and run with a remote plugin

    /private/var/folders/23/gjsrxxg57v5fqwmcsk2_57b80000gn/T/tmp-3602WX7D0eoNUHaE.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export default function() {
                                                                                             ^^^^^^

    SyntaxError: Unexpected token export



      at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/script_transformer.js:318:17)
      at PluginLoader.<anonymous> (src/PluginLoader.ts:20:28)
      at fulfilled (src/PluginLoader.ts:4:56)

 PASS  src/__tests__/Options.test.ts
 PASS  src/resolvers/__tests__/FileSystemResolver.test.ts
 PASS  src/__tests__/TransformRunner.test.ts
 PASS  src/resolvers/__tests__/AstExplorerResolver.test.ts
 PASS  src/resolvers/__tests__/NetworkResolver.test.ts
 PASS  src/__tests__/ProcessSnapshot.test.ts

Test Suites: 1 failed, 6 passed, 7 total
Tests:       4 failed, 51 passed, 55 total
Snapshots:   0 total
Time:        1.757s
Ran all test suites.

[eventualbuddha]

Closing for now. It would be nice to get Jest working but it's not a high priority.