Support TypeScript plugins in find plugin manager via esbuild

[Copilot]

Summary

Add the ability to load custom and built-in plugins from index.ts first (compiled at runtime with esbuild) and fall back to index.js.

Changes

• Moved pluginManager.ts to a module pluginManager with an index.ts file export, and other files that are internal to the module - this enables unit test mocking
• Added runtime TypeScript plugin support in pluginManager:
• Updated dynamic import helper to support importing data: and file: URLs directly.
• Added tests in .github/actions/find/tests/pluginManager.test.ts for:
• Added esbuild dependency in .github/actions/find/package.json and updated lockfile.

[Hopeduardo]

Thans

[Copilot]

Pull request overview

This PR introduces a proof-of-concept for loading TypeScript-based scanner plugins in the find GitHub Action by compiling index.ts at runtime with esbuild and falling back to index.js.

Changes:

• Add TS plugin loading via esbuild + data: URL imports, with JS fallback.
• Update dynamicImport to support importing data: and file: URLs directly.
• Expand unit tests around plugin entrypoint preference/fallback behavior and add esbuild dependency.

Show a summary per file

File	Description
.github/scanner-plugins/temp-test-scan/index.js	Adds a new JS plugin folder (appears to be a temporary/POC plugin).
.github/scanner-plugins/reflow-scan/index.ts	Formatting-only adjustments to built-in plugin code.
.github/actions/find/src/pluginManager/pluginFileLoaders.ts	New TS/JS plugin loader helpers (TS loader compiles with esbuild).
.github/actions/find/src/pluginManager/types.d.ts	Introduces plugin types (currently as a .d.ts).
.github/actions/find/src/pluginManager/index.ts	Updates plugin discovery to prefer TS entrypoints and introduces exported plugin access for tests.
.github/actions/find/src/dynamicImport.ts	Adds support for importing data:/file: URLs.
.github/actions/find/src/findForUrl.ts	Updates pluginManager import to the new module path.
.github/actions/find/tests/pluginManager.test.ts	Adds/updates tests for TS-vs-JS plugin loading behavior.
.github/actions/find/tests/findForUrl.test.ts	Adjusts imports/types after pluginManager module changes.
.github/actions/find/package.json	Adds esbuild dependency.
.github/actions/find/package-lock.json	Lockfile update to include esbuild and platform packages.

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Files not reviewed (1)

• .github/actions/find/package-lock.json: Language not supported

Comments suppressed due to low confidence (1)

.github/actions/find/src/pluginManager/index.ts:12

• types.d.ts is a declaration-only file and isn’t included by this package’s tsconfig.json (include: ["src/**/*.ts"]), so it won’t produce any runtime output in dist. Importing Plugin/PluginDefaultParams as values from ./types.d.js will therefore break at runtime/build. Move these types to a .ts module (or inline them) and import them with import type so no runtime import is emitted.

• Files reviewed: 8/11 changed files
• Comments generated: 6

[lindseywild]

In addition to these comments, I think we should update the documentation as well so users know they can now use TS files when creating custom plugins, too!

[lindseywild]

Some docs nits, feel free to do with them what you want!

[lindseywild]

Nice work on this! 🎉