Add VS Code-style autocomplete with keyword suggestions#9
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Enable CodeMirror's completion UI in the editable setup (read-only previews stay off) and wire per-language sources: - JS/TS/JSX/TSX: keep the built-in keyword/local completions and add scopeCompletionSource(globalThis) so browser globals and their members (console.log, JSON.parse…) complete like in VS Code. - HTML/CSS/Python/SQL: their lang packages already ship completion sources; enabling the UI is enough. - Languages without a completion source (legacy stream modes plus bare grammars like Java/C++/PHP/JSON/XML): a fallback source merges word-based suggestions from the document with curated per-language keyword lists, deduplicating words already offered as keywords. - Markdown prose stays quiet; fenced code blocks complete via their nested language. Style the suggest popup after VS Code (panel tokens, blue matched text, per-type symbol icon colors) in both themes, and swap the default key-emoji keyword glyph for a plain marker. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QAjpJTH4WCmyRXkMWLSosz
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…plete-approach-p5xnwq # Conflicts: # src/components/Editor/Editor.tsx
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Implements autocomplete for languages that lack built-in completion sources, providing word-based suggestions merged with curated keyword lists styled to match VS Code's suggest widget.
Summary
This PR adds intelligent autocomplete to the editor for 24 languages (Java, C/C++, PHP, Go, Rust, etc.) that either use legacy grammar modes or don't ship with completion sources. The implementation combines document word suggestions with language-specific keyword lists, styled with a VS Code-inspired popup design.
Key Changes
New completion module (
src/components/Editor/completions.ts):wordAndKeywordCompletion(): Merges CodeMirror's word-based completions with optional keyword lists, deduplicating keywords that appear in the documentLANGUAGE_KEYWORDS: Curated keyword lists for 24 languages (reserved words, builtins, common types/functions)Editor integration (
src/components/Editor/Editor.tsx):loadJavaScript()helper to add scope-aware completions viascopeCompletionSource(globalThis)FALLBACK_COMPLETION_LANGUAGESset to identify languages needing the fallback completion sourceautocompletion: falsetotrue)Styling (
src/app/globals.css):Tests (
src/__tests__/completions.test.ts):Implementation Details
FALLBACK_COMPLETION_LANGUAGES; languages with native completion sources (JavaScript, Python, SQL, etc.) are unaffectedscopeCompletionSource(globalThis)to expose runtime globals!importantflags where necessary to override CodeMirror defaultshttps://claude.ai/code/session_01QAjpJTH4WCmyRXkMWLSosz