CodeVetter · Repo Unpack · Feature catalog

remeda/remeda

Scanned commit 9955bb0eca dated 2026-10-01 — last upstream commit. Generated by codevetter codevetter 1.15.0 on 2026-10-02. Deep analysis by cli:codex via the codex CLI on 2026-10-02 (383s). Source inspection; upstream code and tests were not executed.

The primary user-facing product is the exported utility API, spanning arrays, objects, strings, arithmetic, predicates, and function composition. Selected operations offer stronger output typing and lazy pipeline execution in addition to their runtime transformations. The website presents generated API documentation, migration content, search, and theme controls. Developer-facing companion features include a console playground, PR preview template, and reproducible brand assets.

map returns a newly mapped array with a Mapped<T,U> output type; filter supports type predicates and FilteredArray outputs; both expose eager and lazy implementations.
packages/remeda/src/map.ts#L26-L29 packages/remeda/src/map.ts#L49-L70 packages/remeda/src/filter.ts#L34-L45 packages/remeda/src/filter.ts#L68-L95
Array APIs also export chunking, flattening, set operations, sorting, ranking, sampling, slicing, partitioning, and zipping; groupBy specifically permits undefined keys to exclude items.
packages/remeda/src/index.ts#L7-L51 packages/remeda/src/index.ts#L114-L163 packages/remeda/src/groupBy.ts#L5-L23
Object APIs include pick, omit, merge, entries, and path operations; prop accepts variadic keys with nullish early return, while setPath clones each traversed object or array branch.
packages/remeda/src/index.ts#L78-L109 packages/remeda/src/prop.ts#L452-L477 packages/remeda/src/setPath.ts#L87-L117
The public API exports arithmetic and aggregation, random number/string helpers, case conversion, trimming-related truncation, and type predicates; conditional evaluates the first matching case and throws when no case or fallback matches.
packages/remeda/src/index.ts#L53-L76 packages/remeda/src/index.ts#L111-L156 packages/remeda/src/conditional.ts#L728-L744
funnel provides configurable debouncing, throttling, and batching through triggerAt, minQuietPeriodMs, maxBurstDurationMs, minGapMs, and an optional reducer; callers receive call, cancel, flush, and isIdle.
packages/remeda/src/funnel.ts#L13-L68 packages/remeda/src/funnel.ts#L96-L152
Website routes include the homepage, a single-page function reference with anchors, generated per-library migration pages, and legacy V1 documentation; /v1 redirects to /migrate/v1.
packages/docs/AGENTS.md#L39-L44 packages/docs/src/pages/docs.astro#L17-L27 packages/docs/src/pages/migrate/[library].astro#L9-L30 packages/docs/astro.config.ts#L61-L64
The header provides Algolia DocSearch and light/dark/system selection; missing search results generate a GitHub issue URL, and function cards display calling-style signatures, parameters, return labels, examples, and source links.
packages/docs/src/components/header.astro#L52-L70 packages/docs/src/components/search.tsx#L21-L46 packages/docs/src/components/theme-switcher.tsx#L22-L27 packages/docs/src/components/function-api.astro#L59-L106
The website exposes Remeda as window.R for console experimentation, the StackBlitz start script loads exports into a Node REPL, and brand scripts generate SVG lockups plus favicon, social-preview, and avatar assets.
packages/docs/public/sandbox.js#L1-L18 packages/stackblitz-template/interactive.js#L1-L15 packages/brand/scripts/generate.ts#L85-L114 packages/brand/scripts/generate-assets.ts#L68-L125