@thi.ng/associative

ES Map/Set-compatible implementations with customizable equality semantics & supporting operations
v7.1.6 URL: https://unpkg.com/@thi.ng/associative@7.1.6/index.js
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cachedatastructuredifferenceequalityhashintersectionjoinmapobjectsetsparsetrietypescriptunion

array-operations

This is JavaScript module for fastest array operations
v1.1.0 URL: https://unpkg.com/array-operations@1.1.0/app.js
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arrayfast arraysethashset operationsfastest array functionsoperationsarray differencearray uniquefiltermanipulationfor each performfast array functionsarray functionsarray utilarray flattenflatten array

@codibre/fluent-iterable

Provides LINQ-like fluent api operations for iterables and async iterables (ES2018+).
v1.39.2 URL: https://unpkg.com/@codibre/fluent-iterable@1.39.2/dist/index.js
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iterableasyncIterablelinqmapfilterfluentstreamstreamsreadablemergecombineiteratorasyncIteratoriterationfunctionalcollectionarraymapsetfilterreduceflattenconcateverysomeflatflatMap

ranges-set

Set operations on human-friendly ranges.
v1.2.0 URL: https://unpkg.com/ranges-set@1.2.0/index.modern.js
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humanfriendlyrangesetutil

venn

fluent API library for set operations
v1.1.2 URL: https://unpkg.com/venn@1.1.2/venn.min.js
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vennsetintersectunion