ts-invariant

TypeScript implementation of invariant(condition, message)

v0.10.3 URL: https://unpkg.com/ts-invariant@0.10.3/lib/invariant.cjs

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invariant assertion precondition TypeScript

precond

Precondition checking utilities.

v0.2.3 URL: https://unpkg.com/precond@0.2.3/index.js

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precondition assert invariant contract condition

assert-ts

Invariant and non-null/undefined assertion check with type guards

v0.3.4 URL: https://unpkg.com/assert-ts@0.3.4/lib/index.js

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assert invariant precondition guard assume null-check type guard flow typing

@dozerg/condition

Preconditions utility for TypeScript and JavaScript.

v1.0.11 URL: https://unpkg.com/@dozerg/condition@1.0.11/dist/index.js

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precondition condition assert isNonNull assertNonNull

express-preconditions

Middleware for HTTP Conditional Requests (RFC 7232)

v1.0.5 URL: https://unpkg.com/express-preconditions@1.0.5/lib/index.js

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express condition conditional If-Match If-None-Match If-Modified-Since If-Unmodified-Since If-Range request 7232 rfc7232 precondition