css-vars-ponyfill

Client-side support for CSS custom properties (aka "CSS variables") in legacy and modern browsers

v2.4.9 URL: https://unpkg.com/css-vars-ponyfill@2.4.9/dist/css-vars-ponyfill.min.js

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http-as-promised

Promisified HTTP client

v2.0.1 URL: https://unpkg.com/http-as-promised@2.0.1/http.promise.js

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errors exceptions throw custom util utility bluebird promise request http https statusCode

error-ex

Easy error subclassing and stack customization

v1.3.2 URL: https://unpkg.com/error-ex@1.3.2/index.js

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error errors extend extending extension subclass stack custom

make-error

Make your own error types!

v1.3.6 URL: https://unpkg.com/make-error@1.3.6/index.js

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create custom derive error errors extend extending extension factory inherit make subclass

verror

richer JavaScript errors

v1.10.1 URL: https://unpkg.com/verror@1.10.1/lib/verror.js

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error errors err exception exceptions custom