staging: v0.20.0 Breaking Changes

[aklinker1]

This PR will be rebased onto main once v0.20.0 is ready to be released. It contains all the breaking changes queued up for that release. No ETA for when this version will be released.

The goal is for this to be the last round of breaking changes before v1.0 is released.

• feat!: Remove webextension-polyfill #1084 closes [Experimental Feedback] Exclude webextension-polyfill via extensionApi: "chrome" #868
• fix!: Add suffix to non-production output directories #1086 closes Separate the dev and production outputs #1010
• fix!: Remove deprecated jiti entrypoint loader #1087
• fix!: Rename runner to webExt #1180
• fix!: Remove transformManfiest option #1181
• feat: Upgrade to c12@2 so config is loaded as ESM #1182 closes Load wxt.config.ts as ESM #297
• Vite 6: Explore possible improvements #1214 Vite 6 works just fine, I don't see a reason to make these changes in v0.20, should be able to do them as non-breaking
• chore: Replace require.resolve with import.meta.resolve #1221

  wxt/packages/wxt/src/core/resolve-config.ts

  Lines 424 to 428 in 241c907

  	// TODO: Use this once we're fully running in ESM, see https://github.com/wxt-dev/wxt/issues/277
  	// const url = import.meta.resolve('wxt', import.meta.url);
  	// resolve() returns the "wxt/dist/index.mjs" file, not the package's root
  	// directory, which we want to return from this function.
  	// return path.resolve(fileURLToPath(url), '../..');

• fix!: Make publicDir and modulesDir relative to project root #1216 closes public should be relative to the rootDir instead of srcDir #1209
• docs: Add blog and first blog post to wxt.dev #1261
• feat!: Individual exports and introduce the #imports module #1258
• fix!: Move wxt/storage to wxt/utils/storage #1271
• feat!: Reset inherited styles inside shadow root #1269 closes Apply CSS reset inside shadow roots #1195
• docs: Add upgrade guide for v0.20 #1270
• fix: Add back ExtensionRunnerConfig as deprecated #1311
• feat: Add @wxt-dev/webextension-polyfill module #1310
• Cleanup commits to non-WXT packages to prevent breaking changes to other packages.

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commit: 6c9beee

[codecov]

Codecov Report

Attention: Patch coverage is 83.47578% with 58 lines in your changes missing coverage. Please review.

Project coverage is 80.81%. Comparing base (b150a52) to head (dae4a04).

Files with missing lines	Patch %	Lines
...ges/wxt/src/utils/content-script-ui/shadow-root.ts	73.33%	20 Missing ⚠️
packages/wxt/src/core/define-web-ext-config.ts	30.00%	7 Missing ⚠️
packages/wxt/src/core/builders/vite/index.ts	70.58%	5 Missing ⚠️
packages/wxt/src/browser.ts	20.00%	4 Missing ⚠️
packages/wxt/src/testing/wxt-vitest-plugin.ts	0.00%	3 Missing ⚠️
packages/wxt/src/utils/match-patterns.ts	0.00%	1 Missing and 1 partial ⚠️
packages/wxt/src/utils/storage.ts	0.00%	1 Missing and 1 partial ⚠️
packages/wxt/src/virtual/background-entrypoint.ts	0.00%	2 Missing ⚠️
...irtual/content-script-isolated-world-entrypoint.ts	0.00%	2 Missing ⚠️
packages/wxt/src/virtual/reload-html.ts	0.00%	1 Missing and 1 partial ⚠️
... and 9 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1085      +/-   ##
==========================================
- Coverage   81.12%   80.81%   -0.31%     
==========================================
  Files         128      127       -1     
  Lines        6285     6147     -138     
  Branches     1066     1045      -21     
==========================================
- Hits         5099     4968     -131     
+ Misses       1171     1162       -9     
- Partials       15       17       +2     

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