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Scripts: Add TypeScript for builds and tests #36260

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merged 2 commits into from Nov 11, 2021

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@gziolo gziolo commented Nov 5, 2021

Description

Inspired by https://github.com/mkaz/tsblock from @mkaz:

An example repository with the basic plumbing in place to build a WordPress block using Typescript.

I thought that it would be great better TypeScript support directly to the WordPress packages. This PR improves configuration to make the build work with the example block.

How has this been tested?

  1. I cloned the repository https://github.com/mkaz/tsblock inside the Gutenberg folder.
  2. I removed the existing webpack config override.
  3. I executed ../node_modules/.bin/wp-scripts build to confirm that the build works as expected.
  4. I executed ../node_modules/.bin/wp-scripts start to confirm that the build works as expected.

Screenshots

Screen Shot 2021-11-05 at 15 53 05

Types of changes

Checklist:

@gziolo gziolo self-assigned this Nov 5, 2021
@gziolo gziolo added [Package] Scripts /packages/scripts [Package] Jest preset /packages/jest-preset-default [Type] Enhancement A suggestion for improvement. [Type] Build Tooling Issues or PRs related to build tooling [Type] Automated Testing Testing infrastructure changes impacting the execution of end-to-end (E2E) and/or unit tests. labels Nov 5, 2021
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gziolo commented Nov 5, 2021

I still need to update the documentation to reflect new capabilities added but code-wise it should be fully functional 😄

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Size Change: 0 B

Total Size: 1.08 MB

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@gziolo gziolo force-pushed the update/add-typescript-support-wp-scripts branch from d41b5eb to 57753fc Compare November 8, 2021 14:47
@gziolo gziolo added this to Needs review in Core JS Nov 8, 2021
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gziolo commented Nov 8, 2021

I still need to update the documentation to reflect new capabilities added but code-wise it should be fully functional 😄

It's ready for review.

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Great update 👍 This tests well and worked fine.

One question, why doesn't webpack need ts-loader? Reading the documentation and how I implemented, I mapped the .ts and .tsx extensions to ts-loader. I don't see that being done, but it still works. 🤔

packages/scripts/config/webpack.config.js Show resolved Hide resolved
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gziolo commented Nov 11, 2021

One question, why doesn't webpack need ts-loader? Reading the documentation and how I implemented, I mapped the .ts and .tsx extensions to ts-loader. I don't see that being done, but it still works. 🤔

Both work. You can either use the TypeScript engine directly or Babel that also supports TypeScript syntax. I figured out it’s better to follow the way we handle TypeScript in Gutenberg with Babel.

https://babeljs.io/docs/en/babel-preset-typescript

require.resolve( '@babel/preset-typescript' ),

@gziolo gziolo merged commit d1878e2 into trunk Nov 11, 2021
@gziolo gziolo deleted the update/add-typescript-support-wp-scripts branch November 11, 2021 19:28
@github-actions github-actions bot added this to the Gutenberg 12.0 milestone Nov 11, 2021
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mkaz commented Nov 11, 2021

Babel that also supports TypeScript syntax

Ah right. Babel. I was so focused on webpack and its config. I didn't look at the babel-preset config.
Thanks! 👍

gziolo added a commit that referenced this pull request Nov 12, 2021
@gziolo gziolo moved this from Needs review to Done in Core JS Nov 13, 2021
noisysocks pushed a commit that referenced this pull request Nov 15, 2021
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Is this already available? Because I'm using the latest wp-script 19.2.2 but does not compile the ts[x] files.

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gziolo commented Dec 4, 2021

Unfortunately, we are blocked by the release process for the next major WordPress version. It won’t be published to npm until January. We need to rethink the npm publishing process now that we got blocked for more than two months ☹️

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Thank you for your answer, for now I will try to use the script from @mkaz , it's a pity to wait untill jannuary ☹️

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So, for now I just copied the webpack config file in my directory and it seems to work.
I also copied the two files for jest config and changed in all file the path for require( '../utils' ) to require( '@wordpress/scripts/utils' ) and also changed other paths to point to the right directory to avoid arror on run, for example in jest-unit.config.js I updated the path with @wordpress/scripts/config/ to point to the right file.
I also copied the all jest-preset-default directory and point to this copied directory instead of the @wordpress package.

As soon as it will be released I will revert to the default version.

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