rttc

Runtime type-checking for JavaScript.

v10.0.1 URL: https://unpkg.com/rttc@10.0.1/index.js

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type-checking validation static-analysis typed-javascript

typy

Minimal JavaScript type checking library

v3.3.0 URL: https://unpkg.com/typy@3.3.0/lib/index.js

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type types is check checking validate validation utility util typeof instanceof object assert assertion test kind primitive verify compare

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

lintspaces

Library for checking spaces in files

v1.0.0 URL: https://unpkg.com/lintspaces@1.0.0/src/index.js

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validation lint spaces trailingspaces indent indentation newlines eof eol

company-email-validator

Provides a fast company / work email validator by checking whether the email domain is in the free email provider list.

v1.1.0 URL: https://unpkg.com/company-email-validator@1.1.0/index.js

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email validation validator syntax company work