is-unicode-supported

Detect whether the terminal supports Unicode

v2.1.0 URL: https://unpkg.com/is-unicode-supported@2.1.0/index.js

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terminal unicode detect utf8 console shell support supports supported check detection

is-supported-regexp-flag

Check whether a RegExp flag is supported

v2.0.0 URL: https://unpkg.com/is-supported-regexp-flag@2.0.0/index.js

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regexp regex check is support supported valid flag

regexp-helper

regexp-helper

v1.0.43 URL: https://unpkg.com/regexp-helper@1.0.43/index.js

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check es2018 esnext flag flags helper is pattern re regex regexp regular expression support supported unicode util valid

regexp-support

check RegExp ( regular expressions ) support

v1.0.59 URL: https://unpkg.com/regexp-support@1.0.59/index.js

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check es2018 esnext flag flags is pattern property proto prototype re regex regexp regular expression static support supported unicode valid

polyfill-io-feature-detection

Feature detection in the browser before loading polyfill using services like polyfill.io

v1.1.15 URL: https://unpkg.com/polyfill-io-feature-detection@1.1.15/index.js

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polyfill.io feature detection polyfill detect pre-detect supported browser