feat(runtimes): #1323 support for Bun #1308

thescientist13 · 2024-11-09T00:12:09Z

Related Issue

related to #1323

See example / demo repo here

https://github.com/thescientist13/greenwood-bun

[DEMO] Bun thescientist13/greenwood-lit-ssr#31

https://github.com/thescientist13/bun-plugin-workers

https://github.com/thescientist13/bun-node-compat-tests

Summary of Changes

Add GitHub Actions for Bun
Made slight tweaks per results uncovered during testing

Documentation

Add a PR to the website (home page, hosting, etc) (assuming all actions pass)
- add bun support to copy to clipboard component
- add Bun logo to the home page
- setup and self-hosting docs (min version >= 1.3.0)
- (out of) ordering of content as data - feat(runtimes): #1323 support for Bun #1308 (comment)
- callout needing trustedDependencies to support postinstall scripts with Bun, like for the puppeteer plugin
- make sure to run bun with --bun flag for NPM scripts
- testing w/ Bun - feat: bun test example thescientist13/greenwood-bun#8
document trusted deps in puppeteer plugin README

TODO

Upstreams / Issues

(Bun) Decorators not supported - support typescript@5 decorator oven-sh/bun#4122 (comment)
(Bun) Plugins are not supported in Workers - Worker does not load preload from bunfig.toml oven-sh/bun#12608 (comment)
Give feedback on Investigate why mocha is very slow oven-sh/bun#13087

node-html-parser import - giving this one a pass for now - https://github.com/thescientist13/bun-node-compat-tests?tab=readme-ov-file#node-html-parser

Details

   TypeError: htmlparser.parse is not a function. (In 'htmlparser.parse(html, {
     script: !0,
     style: !0
   })', 'htmlparser.parse' is undefined)
       at /Users/owenbuckley/Workspace/github/greenwood-bun/node_modules/@greenwood/cli/src/lib/resource-utils.js:116:27
       at trackResourcesForRoute (/Users/owenbuckley/Workspace/github/greenwood-bun/node_modules/@greenwood/cli/src/lib/resource-utils.js:114:39)
       at /Users/owenbuckley/Workspace/github/greenwood-bun/node_modules/@greenwood/cli/src/lifecycles/prerender.js:168:11

~~Had to check for an unexpected URL coming from Rollup~~ - can't reproduce?

Details

    {
       id: "\u0000commonjsHelpers.js",
       idUrl: URL {
         href: "file://commonjshelpers.js/",
         origin: "null",
         protocol: "file:",
         username: "",
         password: "",
         host: "commonjshelpers.js",
         hostname: "commonjshelpers.js",
         port: "",
         pathname: "/",
         hash: "",
         search: "",
         searchParams: URLSearchParams {},
         toJSON: [Function: toJSON],
         toString: [Function: toString],
       },
     }

Lit SSR - can not reproduce

Details

     building from local sources...
     200 |   #onClose(e) {
     201 |     this.#onExitPromise = e.code, this.emit("exit", e.code);
     202 |   }
     203 |   #onError(event) {
     204 |     let error = event?.error;
     205 |       error = new Error(event.message, { cause: event });
                         ^
     error: 1 | /**
     2 |  * @license
     3 |  * Copyright 2017 Google LLC
     4 |  * SPDX-License-Identifier: BSD-3-Clause
     5 |  */
     6 | const t=globalThis,i=t.trustedTypes,s=i?i.createPolicy("lit-html",{createHTML:t=>t}):void 0,e="$lit$",h=`lit$${Math.random().toFixed(9).slice(2)}$`,o="?"+h,n=`<${o}>`,r=void 0===t.document?{createTreeWalker:()=>({})}:document,l=()=>r.createComment(""),c=t=>null===t||"object"!=typeof t&&"function"!=typeof t,a=Array.isArray,u=t=>a(t)||"function"==typeof t?.[Symbol.iterator],d="[ \t\n\f\r]",f=/<(?:(!--|\/[^a-zA-Z])|(\/?[a-zA-Z][^>\s]*)|(\/?$))/g,v=/-->/g,_=/>/g,m=RegExp(`>|${d}(?:([^\\s"'>=/]+)(${d}*=${d}*(?:[^ \t\n\f\r"'\`<>=]|("|')|))|$)`,"g"),p=/'/g,g=/"/g,$=/^(?:script|style|textarea|title)$/i,y=t=>(i,...s)=>({_$litType$:t,strings:i,values:s}),x=y(1),T=y(2),b=y(3),w=Symbol.for("lit-noChange"),E=Symbol.for("lit-nothing"),A=new WeakMap,C=r.createTreeWalker(r,129);function P(t,i){if(!a(t)||!t.hasOwnProperty("raw"))throw Error("invalid template strings array");return void 0!==s?s.createHTML(i):i}const V=(t,i)=>{const s=t.length-1,o=[];let r,l=2===i?"":3===i?"":"",c=f;for(let i=0;i TypeError: r.createTreeWalker is not a function. (In 'r.createTreeWalker(r, 129)', 'r.createTreeWalker' is undefined)
       at /Users/owenbuckley/Workspace/github/greenwood-lit-ssr/node_modules/lit-html/node/lit-html.js:6:750
 
       at #onError (node:worker_threads:205:15)
 
 Bun v1.2.2 (macOS arm64)
 error: script "build" exited with code 1

GraphQL failing - looks like we just need to upgrade to @apollo/server v4 - https://github.com/thescientist13/bun-node-compat-tests?tab=readme-ov-file#%EF%B8%8F-apollo-graphql-server-playground

Details

   OPTIONS - /graphql failed
   30 |         }
   31 |         var connectionHandler = (function (socket, request) {
   32 |             socket.upgradeReq = request;
   33 |             if (socket.protocol === undefined ||
   34 |                 (socket.protocol.indexOf(protocol_1.GRAPHQL_WS) === -1 && socket.protocol.indexOf(protocol_1.GRAPHQL_SUBSCRIPTIONS) === -1)) {
   35 |                 socket.close(1002);
                               ^
   TypeError: socket.close is not a function. (In 'socket.close(1002)', 'socket.close' is undefined)
         at connectionHandler (/Users/owenbuckley/Workspace/project-evergreen/greenwood/node_modules/subscriptions-transport-ws/dist/server.js:35:24)

bug(cli): #1323 refine serving logic for node modules plugin #1577
- which means custom loaders are not supported, and we can't use useTsc to process our own decorators
- or, we find something other than worker threads for our needs - configuration lifecycle is running excessively (related to custom loaders usage?) #1439
Mocha test cases seem to run foreveeeeeer, since failing tests cases pass when run individually - Investigate why mocha is very slow oven-sh/bun#13087
- seems fine (now)

thescientist13 · 2025-10-04T23:33:33Z

Interesting, running a test with Bun gets this order of pages when crawling the pages directory

  Build Greenwood With: 
    Prerender Configuration turned on using Content As Data collections
-------------------------------------------------------
Welcome to Greenwood (v0.33.3) ♻️
-------------------------------------------------------
Running Greenwood with the build command.
Initializing project config
Initializing project workspace contexts
Generating graph of workspace files...
building from local sources...
building from external sources...
pages to generate 
 /
 /toc/
 /blog/
 /blog/second-post/
 /blog/first-post/
 /external/
Initializing active content...

While Node gives them top down

  Build Greenwood With: 
    Prerender Configuration turned on using Content As Data collections
-------------------------------------------------------
Welcome to Greenwood (v0.33.3) ♻️
-------------------------------------------------------
Running Greenwood with the build command.
Initializing project config
Initializing project workspace contexts
Generating graph of workspace files...
building from local sources...
building from external sources...
pages to generate 
 /blog/first-post/
 /blog/
 /blog/second-post/
 /
 /toc/
 /external/
Initializing active content...

This causes some test cases to fail since they assume a specific order of content as data

See oven-sh/bun#10112 and thescientist13/greenwood-starter-presentation#49

thescientist13 · 2025-10-04T23:51:21Z

For some other stuff related to tests

1) Develop Greenwood With: 
     Default Configuration for CSS Modules
       index.html with expected CSS and SSR contents
         Header component with CSS Modules
           CSS module should be processed as ESM
             "before all" hook for "the served content should be untouched":
   Error: scan: invalid `cwd`, not a string

For this error, cwd for fs.glob needed to be a string

thescientist13 · 2025-10-05T00:00:31Z

For init, was getting this test failure when running the Yarn installer

➜  greenwood git:(feature/issue-953-bun-compat) ✗ bun run --bun test:bun
$ cross-env BROWSERSLIST_IGNORE_OLD_DATA=true __GWD_ROLLUP_MODE__=strict NODE_NO_WARNINGS=1 mocha --timeout 360000 --exclude "./packages/**/test/cases/loaders-*/**" "./packages/**/**/*.spec.js"


  Initialize a new Greenwood project: 
    Scaffolding a new project with dependencies installed through Yarn
-------------------------------------------------------
Initialize a Greenwood Project (v0.33.3) ♻️
-------------------------------------------------------
creating output directory => my-app
copying project files to =>  /Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/init/test/cases/init.options.install-yarn/my-app/
setting up package.json...
creating a .gitignore file...
installing dependencies using => yarn...
yarn install v1.22.22
warning package.json: No license field
info No lockfile found.
warning [email protected]: No license field
[1/4] 🔍  Resolving packages...
error Error: https://registry.yarnpkg.com/@greenwood%2fcli: SSL Error: https://registry.yarnpkg.com/@greenwood%2fcli does not support SSL
    at <anonymous> (/Users/owenbuckley/.nvm/versions/node/v22.18.0/lib/node_modules/yarn/lib/cli.js:142154:27)
    at emit (node:events:95:22)
    at <anonymous> (node:_http_client:232:45)
    at processTicksAndRejections (native:7:39)
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

Had to run this command

yarn config set strict-ssl false

thescientist13 · 2025-10-05T00:02:46Z

Getting some issues from the develop related test cases

 101 passing (6s)
  7 failing

  1) Develop Greenwood With: 
       Default Greenwood Configuration and Workspace
         Develop command with source map specific behavior
           should return the correct content type:

      expected 'text/javascript' to equal 'application/json'
      + expected - actual

      -text/javascript
      +application/json
      
  Error
      at unknown
      at <anonymous> (packages/cli/test/cases/develop.default/develop.default.spec.js:539:57)

  2) Develop Greenwood With: 
       Default Greenwood Configuration and Workspace
         Develop command with POST API specific behaviors for JSON
           should return a 200 status:

      expected 500 to equal 200
      + expected - actual

      -500
      +200
      
  Error
      at unknown
      at <anonymous> (packages/cli/test/cases/develop.default/develop.default.spec.js:802:36)

  3) Develop Greenwood With: 
       Default Greenwood Configuration and Workspace
         Develop command with POST API specific behaviors for JSON
           should return the expected response message:
     TypeError: null is not an object (evaluating 'data.message')
      at <anonymous> (packages/cli/test/cases/develop.default/develop.default.spec.js:806:16)

  4) Develop Greenwood With: 
       Default Greenwood Configuration and Workspace
         Develop command with POST API specific behaviors for JSON
           should return the expected content type header:

      expected 'text/plain; charset=utf-8' to equal 'application/json'
      + expected - actual

      -text/plain; charset=utf-8
      +application/json
      
  Error
      at unknown
      at <anonymous> (packages/cli/test/cases/develop.default/develop.default.spec.js:810:57)

  5) Develop Greenwood With: 
       Default Greenwood Configuration and Workspace
         Develop command with POST API specific behaviors for JSON
           should return the secret header in the response:
     expected null to equal '1234'
  Error
      at unknown
      at <anonymous> (packages/cli/test/cases/develop.default/develop.default.spec.js:814:53)

  6) Develop Greenwood With: 
       Default Greenwood Configuration and Workspace
         Develop command with POST API specific behaviors for FormData
           "before all" hook for "should return a 200 status":
     Unable to connect. Is the computer able to access the url?
  

  7) Develop Greenwood With: 
       Default Greenwood Configuration and Workspace
         Develop command nested API specific behaviors
           "before all" hook for "should return a 200 status":
     Unable to connect. Is the computer able to access the url?

thescientist13 · 2025-10-18T23:04:25Z

Hmm, seems like we're getting a little trouble from PostCSS...

****************************************************************************
11 | 
12 | async function getConfig(compilation, extendConfig = false) {
13 |   const { projectDirectory } = compilation.context;
14 |   const configFile = "postcss.config";
15 |   // @ts-expect-error see https://github.com/microsoft/TypeScript/issues/42866
16 |   const defaultConfig = (await import(new URL(`./${configFile}.js`, import.meta.url)))?.default;
                                                                                        ^
ReferenceError: Cannot access 'default' before initialization.
      at getConfig (/Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/plugin-postcss/src/index.js:16:84)
      at preIntercept (/Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/plugin-postcss/src/index.js:51:26)
      at /Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/cli/src/lifecycles/serve.js:166:22
      at /Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/cli/src/lifecycles/serve.js:162:27
      at /Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/cli/src/lifecycles/serve.js:162:27
      at /Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/cli/src/lifecycles/serve.js:162:27
      at /Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/cli/src/lifecycles/serve.js:161:40
      at /Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/cli/src/lifecycles/serve.js:128:4
      at /Users/owenbuckley/Workspace/project-evergreen/greenwood/packages/cli/src/lifecycles/serve.js:74:9
      at processTicksAndRejections (native:7:39)

and so of course running the local website the styles are broken

thescientist13 · 2025-10-18T23:57:41Z

Perhaps attributable to different implementations around fs.glob but getting slightly different results for the import map count

  1) Develop Greenwood With: 
       Default Greenwood Configuration and Workspace
         Develop command specific HTML behaviors
           should return an import map shim <script> in the <head> of the document:

      expected 15125 to equal 15154
      + expected - actual

      -15125
      +15154
      
  Error
      at unknown
      at <anonymous> (packages/cli/test/cases/develop.default/develop.default.spec.js:134:39)

… action

thescientist13 added enhancement Improve something existing (e.g. no docs, new APIs, etc) documentation Greenwood specific docs CLI labels Nov 9, 2024

thescientist13 added this to the 1.0 milestone Nov 9, 2024

thescientist13 changed the title ~~add github actions for bun~~ feature/issue 953 validate support for Bun Nov 9, 2024

thescientist13 added feature New feature or request question Further information is requested and removed enhancement Improve something existing (e.g. no docs, new APIs, etc) labels Nov 9, 2024

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thescientist13 changed the title ~~feature/issue 953 validate support for Bun~~ feature/issue 953 support for Bun Nov 11, 2024

thescientist13 mentioned this pull request Nov 25, 2024

v0.31.0 release tracking #1328

Closed

40 tasks

thescientist13 linked an issue Nov 28, 2024 that may be closed by this pull request

Bun runtime support #1323

Open

thescientist13 removed this from the 1.0 milestone Nov 28, 2024

thescientist13 force-pushed the feature/issue-953-bun-compat branch from d11db6b to 2f55bb7 Compare January 2, 2025 17:54

thescientist13 self-assigned this Jan 2, 2025

thescientist13 force-pushed the feature/issue-953-bun-compat branch from fa3acc0 to 41d563c Compare February 21, 2025 22:37

thescientist13 changed the title ~~feature/issue 953 support for Bun~~ feature/issue 1323 support for Bun Feb 22, 2025

thescientist13 mentioned this pull request Sep 27, 2025

enhancement: full demo w/ TypeScript thescientist13/greenwood-bun#5

Closed

9 tasks

thescientist13 mentioned this pull request Oct 4, 2025

[DEMO] Bun thescientist13/greenwood-lit-ssr#31

Draft

5 tasks

thescientist13 changed the title ~~feature/issue 1323 support for Bun~~ feat(cli): #1323 support for Bun Oct 4, 2025

thescientist13 force-pushed the feature/issue-953-bun-compat branch from 81ea23a to 7d90290 Compare October 5, 2025 00:06

thescientist13 added Init needs upstream labels Oct 5, 2025

thescientist13 added the Runtimes Tasks related to supporting runtimes like Deno, Bun, etc label Oct 18, 2025

thescientist13 changed the title ~~feat(cli): #1323 support for Bun~~ feat(runtimes): #1323 support for Bun Oct 18, 2025

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thescientist13 force-pushed the feature/issue-953-bun-compat branch from 3ec9b8e to 5599db5 Compare October 19, 2025 00:02

thescientist13 added 13 commits November 8, 2025 17:17

add github actions for bun

1146840

trusted deps

846d2de

WIP running test cases with bun

09ae46e

update mocha timeout in config file

8ee1052

formatting and tweaks

10cf812

restoring more test cases

5f0581f

update actions

04980c7

handle out of order content

2897803

explicitely send JSON content type for JSON requests

b205944

interop for develop test cases

1437a6d

misc interop

30cdd1a

remove lerna bootstrap commands

e7e5710

feature(runtimes): #953 run loaders test cases for bun loaders github…

af6372e

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thescientist13 force-pushed the feature/issue-953-bun-compat branch from 3f41a25 to af6372e Compare November 8, 2025 22:24

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Summary of Changes

Documentation

TODO

Upstreams / Issues

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