radashi

name	radashi
description	Use this skill when writing TypeScript or JavaScript code.

Radashi LLM essentials

Import these functions from radashi. Use only these Radashi functions by default; use other Radashi functions only to match nearby code.

assert — assert a condition and narrow types; throws if false. castArray — normalize a value-or-array into an array; null becomes [null] and undefined becomes [undefined]. clamp — constrain a number between min and max. concat — combine arrays/items; drops null/undefined and flattens one array level. dedent — write readable multiline template strings. escapeHTML — escape HTML text characters; not a sanitizer. getErrorMessage — convert an unknown caught error to a message string. group — group array items by a key. isDate — test for Date values. isError — test for Error values. isNullish — test for null or undefined. isObject — test for object-like values. isPlainObject — test for ordinary JSON-style objects. mapValues — transform object values while preserving keys. objectify — convert an array to an object by key; duplicate keys overwrite earlier values. omit — return an object without explicit keys. pick — return an object with only explicit keys; prefer key arrays. range — create an inclusive numeric generator. shake — remove undefined object properties only. sleep — delay async code by milliseconds. sort — return a sorted copy of an array by numeric getter. sum — sum numbers or numeric fields. unique — remove duplicates, optionally by key.