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Module

x/isx/mod.ts>isError

TypeScript-first is function collections
TomokiMiyauci/isx
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function isError
import { isError } from "https://deno.land/x/isx@1.0.0-beta.18/mod.ts";

Whether the value is Error or not.

Parameters

value: unknown
  • Any value.
import { isError } from "https://deno.land/x/isx@$VERSION/mod.ts"
import { assertEquals } from "https://deno.land/std@$VERSION/testing/asserts.ts"
assertEquals(isError(Error()), true)
assertEquals(isError(new SyntaxError()), false)

Returns

value is Error