environment

Check which JavaScript environment your code is running in at runtime: browser, Node.js, Bun, etc
v1.1.0 URL: https://unpkg.com/environment@1.1.0/index.js
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runtimeenvironmentenvexecutionengineplatformcontextjsjavascriptischeckcheckingdetectdetectionbrowsernodebundenoelectronjsdomwebworkerworkerserviceworkermacosiosiphoneipadwindowslinuxandroidosoperatingsystem

es-check

Checks the ECMAScript version of .js glob against a specified version of ECMAScript with a shell command
v9.3.1 URL: https://unpkg.com/es-check@9.3.1/index.js
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check for es6check for moduleseses checkes matchinges versionecmascriptecmascript checkecmascript matchingecmascript versionjsjs versionjs version checkjs version matchingtest js versiontest ecmascript version

fast-xml-parser

Validate XML, Parse XML, Build XML without C/C++ based libraries
v5.2.5 URL: https://unpkg.com/fast-xml-parser@5.2.5/lib/fxp.cjs
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fastxmljsonparserxml2jsx2jsxml2jsonjsvalidatorvalidatetransformerassertjs2xmljson2xmlhtml

karma

Spectacular Test Runner for JavaScript.
v6.4.4 URL: https://unpkg.com/karma@6.4.4/lib/index.js
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karmaspectacularrunnerkarmajsjavascripttestingtestremoteexecution

flow-bin

Binary wrapper for Flow - A static type checker for JavaScript
v0.279.0 URL: https://unpkg.com/flow-bin@0.279.0/index.js
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cli-appclibinbinaryflowfacebooktypeinferencecheckcheckerjavascriptjswrapper