n8n-syntax-extension-methods
Installation
SKILL.md
n8n Extension Methods
Complete reference for all n8n v1.x expression extension methods. ALWAYS use extension methods over raw JavaScript equivalents — they are null-safe and optimized for n8n's expression engine.
Quick Reference — Method Categories
| Category | Count | Common Use Cases |
|---|---|---|
| String | 19 methods | Extract emails/URLs, encode/decode, hash, case conversion |
| Array | 21 methods | Pluck fields, deduplicate, chunk, set operations |
| Number | 11 methods | Round, format, type checks, convert to DateTime |
| Object | 12 methods | Filter fields, merge, compact, serialize |
| Boolean | 3 methods | Convert to number/string, null check |
| DateTime | 25+ methods | Arithmetic, comparison, formatting, timezone |
| BinaryFile | 7 properties | File metadata access |
Full method signatures and parameters: references/methods.md Practical examples: references/examples.md
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