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20 lines
734 B
20 lines
734 B
4 months ago
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# ts-invariant
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[TypeScript](https://www.typescriptlang.org) implementation of
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[`invariant(condition, message)`](https://www.npmjs.com/package/invariant).
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Supports `invariant.log`, `invariant.warn`, and `invariant.error`, which
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wrap `console` methods of the same name, and may be stripped in production
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by [`rollup-plugin-invariant`](../../archived/rollup-plugin-invariant).
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The verbosity of these methods can be globally reconfigured using the
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`setVerbosity` function:
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```ts
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import { setVerbosity } from "ts-invariant";
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setVerbosity("log"); // display all messages (default)
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setVerbosity("warn"); // display only warnings and errors
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setVerbosity("error"); // display only errors
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setVerbosity("silent"); // display no messages
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```
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