bare-assert

stable

bare-assert — Assertion library for JavaScript.

Mirrors the Node.js assert module.

npm i bare-assert

API

new AssertionError(opts?: {
      message?: string
      actual?: any
      expected?: any
      operator?: string
    })

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Create an AssertionError, optionally setting its message, actual, expected, and operator.

Parameters

Parameter	Type	Default	Description
`opts?`	`{ message?: string actual?: any expected?: any operator?: string }`	—	Fields to set on the new error: `message` (defaults to a generated `"<actual> <operator> <expected>"` string), `actual`, `expected`, and `operator`.

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The actual value that failed the assertion.

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The expected value the assertion was checked against.

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The comparison operator used by the assertion that failed, e.g. '==' or 'strictEqual'.

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Throw an AssertionError if value is falsy.

Parameters

Parameter	Type	Default	Description
`value`	`any`	—	The value to assert is truthy.
`message?`	`string` \| `Error`	—	Custom message for the thrown error; if an `Error` instance, it is thrown directly instead of an `AssertionError`.

Throws

AssertionError — thrown if value is falsy (unless message is an Error instance, which is thrown instead).