estree-util-is-identifier-name

Check if something can be an ecmascript (javascript) identifier name
v3.0.0 URL: https://unpkg.com/estree-util-is-identifier-name@3.0.0/index.js
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estreeastecmascriptjavascripttreeidentifiercharacter

estree-util-scope

Check what’s defined in an estree scope
v1.0.0 URL: https://unpkg.com/estree-util-scope@1.0.0/index.js
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astecmascriptestreejavascriptscopetree

is-identifier

Check if a string is a valid JavaScript identifier
v1.0.1 URL: https://unpkg.com/is-identifier@1.0.1/index.js
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identifierkeywordwordchecktestreservedjavascriptecmascriptvariablefunctionpropertyisvalid

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

is-var-name

Check if a string can be used as a JavaScript variable name
v2.0.0 URL: https://unpkg.com/is-var-name@2.0.0/index.js
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varvariableletconstidentifiercheckcharacterjavascriptecmascriptspecificationvalidationspecstring