Building the Infrastructure for Real-Time AI Autocomplete (Part 2)

In this 2 part series, we build Cursor-style AI tab completion/autocomplete from scratch. The final output will be a VS Code Extension. Tutorial GitHub Link: https://github.com/RivaanRanawat/tab_... Contribute to the project here: https://github.com/RivaanRanawat/taba... VS Code Extension: https://marketplace.visualstudio.com/... Discord Server -   / discord   Part 1:    • The AI Feature You Use 100x a Day (Built F...   Resources: languageUtils.ts File: https://github.com/RivaanRanawat/tab_... download-grammar.js File: https://github.com/RivaanRanawat/tab_... src/services/astAnalysis.ts file: https://github.com/RivaanRanawat/tab_... promptBuilder.ts file: https://github.com/RivaanRanawat/tab_... Timestamps: (00:00:00) Introduction (00:00:56) LSP vs AST - Why we need AST? (00:03:40) Tree Sitter Parsing Setup + Working Explained + Web Assembly (WASM) (00:20:39) AST Parsing (00:35:52) Replacement Region Architecture (00:41:02) Coding up Replacement Region Stage (01:26:14) Suffix Stage (01:44:17) Cross File Symbols + Indexing Files + Reference Extraction (03:14:08) Wiring up all Context Gathering Stages (03:21:46) Prompt Builder + Fit To Token Budget (03:54:09) Next Steps - What's Missing (03:56:53) LLM Output Cleaning (04:03:19) Deduplication (05:02:15) Compute Minimal Edit (05:25:23) Deletion Decoration (05:39:12) Custom Tab Accept & Escape Reject Command + Intent Tracking (05:59:38) Cheap, Fast LLM vs Strong, Slow LLMs (06:03:18) Groq LLM Support (06:14:53) Fireworks AI (06:25:38) Testing Fireworks (06:31:36) Conclusion Connect With Me Here: GitHub: https://github.com/rivaanranawat Linkedin:   / rivaan-ranawat   X: https://x.com/RanawatRivaan Substack: https://rivaanranawat.substack.com Instagram:   / optimalcoding