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Error.isError

Category

JavaScript

Type

Chromium catches up

Status

In developer trial (Behind a flag) (Chrome 134)

Intent stage

None

Summary

Adds the Error.isError(obj) static method. It returns true for JS native errors and DOMExceptions, and false otherwise.

Motivation

See https://github.com/tc39/proposal-is-error/blob/main/README.md

Standards & signals

• Specification: https://tc39.es/proposal-is-error
• Firefox: Positive — This is a Stage 3 TC39 proposal.
• Safari: Positive — This is a Stage 3 TC39 proposal.
• Web developers: No signals

View on chromestatus.com