type-check

type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

v0.4.0 URL: https://app.unpkg.com/type-check@0.4.0/files/lib

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type check checking library

typical

Isomorphic, functional type-checking for Javascript

v7.3.0 URL: https://unpkg.com/typical@7.3.0/index.js

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type checking check value valid is detect number object plainobject array like defined string boolean function promise iterable class primitive isstring isclass isiterable isdefined isobject isomorphic async is-async es6 es2015

kind-of

Get the native type of a value.

v6.0.3 URL: https://unpkg.com/kind-of@6.0.3/index.js

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arguments array boolean check date function is is-type is-type-of kind kind-of number object of regexp string test type type-of typeof types

is2

A type checking library where each exported function returns either true or false and does not throw. Also added tests.

v2.0.9 URL: https://unpkg.com/is2@2.0.9/index.js

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type check checker checking utilities network networking credit card validation

file-type

Detect the file type of a file, stream, or data

v21.1.1 URL: https://unpkg.com/file-type@21.1.1/index.js

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mime file type magic archive image img pic picture flash photo video detect check is exif elf macho exe binary buffer uint8array jpg png apng gif webp flif xcf cr2 cr3 orf arw dng nef rw2 raf tif bmp icns jxr psd indd zip tar rar gz bz2 7z dmg mp4 mid mkv webm mov avi mpg mp2 mp3 m4a ogg opus flac wav amr pdf epub mobi swf rtf woff woff2 eot ttf otf ttc ico flv ps xz sqlite xpi cab deb ar rpm Z lz cfb mxf mts wasm webassembly blend bpg docx pptx xlsx 3gp j2c jp2 jpm jpx mj2 aif odt ods odp xml heic ics glb pcap dsf lnk alias voc ac3 3g2 m4b m4p m4v f4a f4b f4p f4v mie qcp asf ogv ogm oga spx ogx ape wv cur nes crx ktx dcm mpc arrow shp aac mp1 it s3m xm skp avif eps lzh pgp asar stl chm 3mf zst jxl vcf jls pst dwg parquet class arj cpio ace avro icc fbx vsdx vtt apk drc lz4 potx xltx dotx xltm ots odg otg otp ott xlsm docm dotm potm pptm jar rm ppsm ppsx tar.gz reg dat