Function

registerDeprecationHandler (handler) public

Module:	@ember/debug

Defined in packages/@ember/debug/lib/deprecate.ts:30

Available since v2.1.0

import { registerDeprecationHandler } from '@ember/debug';

handler

Function

A function to handle deprecation calls.

Allows for runtime registration of handler functions that override the default deprecation behavior. Deprecations are invoked by calls to @ember/debug/deprecate. The following example demonstrates its usage by registering a handler that throws an error if the message contains the word "should", otherwise defers to the default handler.

import { registerDeprecationHandler } from '@ember/debug';

registerDeprecationHandler((message, options, next) => {
  if (message.indexOf('should') !== -1) {
    throw new Error(`Deprecation message with should: ${message}`);
  } else {
    // defer to whatever handler was registered before this one
    next(message, options);
  }
});

The handler function takes the following arguments:

• message - The message received from the deprecation call.
• options - An object passed in with the deprecation call containing additional information including:
• id - An id of the deprecation in the form of package-name.specific-deprecation.
• until - The Ember version number the feature and deprecation will be removed in.
• next - A function that calls into the previously registered handler.