esbuild for transpile and bundle

[jrieken]

No description provided.

[Copilot]

Pull request overview

This PR introduces a new esbuild-based build pipeline (build/next) intended to speed up TypeScript transpilation and bundling, and wires it into existing gulp tasks and VS Code watch tasks.

Changes:

• Add new build/next esbuild orchestrator (transpile + bundle) and an esbuild-based NLS extraction/post-process plugin.
• Update gulp build/CI tasks to use the new esbuild pipeline (and adjust NLS analysis implementation reuse).
• Split the default “VS Code - Build” watcher into separate “Core - Transpile” and “Core - Typecheck” tasks and add new npm scripts for the esbuild transpile watcher.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
src/vs/base/browser/ui/codicons/codicon/codicon.css	Updates codicon font URL (removes cache-busting query string).
package.json	Adds npm scripts to run/daemonize the esbuild transpile watcher.
build/next/working.md	Adds working notes describing the new esbuild build system and validation steps.
build/next/nls-plugin.ts	Implements an esbuild plugin + post-processing to extract/replace NLS strings and write NLS metadata.
build/next/index.ts	Adds the esbuild-based transpile/bundle implementation, resource copying, placeholder injection, and watch mode.
build/lib/nls.ts	Refactors NLS patching to reuse shared analysis helpers.
build/lib/nls-analysis.ts	Extracts NLS/localize call analysis + text patching utilities into a shared module.
build/lib/compilation.ts	Adds noEmit support for gulp-tsb compilation/watch (typecheck-only mode).
build/gulpfile.vscode.web.ts	Switches vscode-web CI packaging to esbuild bundling and ensures codicons are copied.
build/gulpfile.vscode.ts	Adds esbuild-based core CI path and optionally routes packaging builds through esbuild.
build/gulpfile.ts	Changes watch-client behavior when esbuild transpile is enabled (typecheck-only via noEmit).
build/buildConfig.ts	Adds a flag to enable esbuild transpile mode (currently hard-coded on).
.vscode/tasks.json	Splits “Core - Build” into “Core - Transpile” + “Core - Typecheck”, adds kill task, and a new problem matcher.

Comments suppressed due to low confidence (1)

build/gulpfile.vscode.ts:201

• Same issue as runEsbuildTranspile: runEsbuildBundle spawns plain node with a .ts entrypoint (build/next/index.ts). Unless a TS loader is explicitly configured, this will crash with a syntax/unknown extension error. Please run the script via tsx (or an equivalent loader) in the spawned process.

		const proc = cp.spawn(process.execPath, args, {
			cwd: root,
			stdio: 'inherit'
		});