refactor: emit change object and use utilities

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---

Author: kgryte

lib/node_modules/@stdlib/plot/vega/autosize/lib/change_event.js

@@ -0,0 +1,42 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MAIN //
+
+/**
+* Returns a new change event object.
+*
+* @private
+* @param {string} property - property name
+* @returns {Object} event object
+*/
+function event( property ) { // eslint-disable-line stdlib/no-redeclare
+	return {
+		'type': 'update',
+		'source': 'autosize',
+		'instance': 'Autosize',
+		'property': property
+	};
+}
+
+
+// EXPORTS //
+
+module.exports = event;

lib/node_modules/@stdlib/plot/vega/autosize/lib/contains/set.js

@@ -26,6 +26,7 @@ var logger = require( 'debug' );
 var contains = require( '@stdlib/array/base/assert/contains' ).factory;
 var join = require( '@stdlib/array/base/join' );
 var format = require( '@stdlib/string/format' );
+var changeEvent = require( './../change_event.js' );
 var METHODS = require( './methods.json' );
 
 
@@ -52,7 +53,7 @@ function set( value ) {
 	if ( value !== this._contains ) {
 		debug( 'Current value: %s. New value: %s.', this._contains, value );
 		this._contains = value;
-		this.emit( 'change' );
+		this.emit( 'change', changeEvent( 'contains' ) );
 	}
 }
 

lib/node_modules/@stdlib/plot/vega/autosize/lib/main.js

@@ -16,6 +16,8 @@
 * limitations under the License.
 */
 
+/* eslint-disable no-restricted-syntax, no-invalid-this */
+
 'use strict';
 
 // MODULES //
@@ -28,11 +30,11 @@ var setReadWriteAccessor = require( '@stdlib/utils/define-read-write-accessor' )
 var hasProp = require( '@stdlib/assert/has-property' );
 var inherit = require( '@stdlib/utils/inherit' );
 var objectKeys = require( '@stdlib/utils/keys' );
-var replace = require( '@stdlib/string/base/replace' );
+var instance2json = require( '@stdlib/plot/vega/base/to-json' );
+var transformErrorMessage = require( '@stdlib/plot/vega/base/transform-validation-message' );
 var format = require( '@stdlib/string/format' );
 var properties = require( './properties.json' );
 var defaults = require( './defaults.js' );
-var toJSON = require( './to_json.js' );
 
 // Note: keep the following in alphabetical order according to the `require` path...
 var getContains = require( './contains/get.js' );
@@ -50,21 +52,6 @@ var setType = require( './type/set.js' );
 var debug = logger( 'vega:autosize:main' );
 
 
-// FUNCTIONS //
-
-/**
-* Transforms an "assignment" error message to an "option validation" error message.
-*
-* @private
-* @param {string} msg - error message
-* @returns {string} transformed message
-*/
-function transformErrorMessage( msg ) {
-	var m = replace( msg, /invalid assignment\. `([^ ]+)`/, 'invalid option. `$1` option' );
-	return replace( m, /\. Value:/, '. Option:' );
-}
-
-
 // MAIN //
 
 /**
@@ -221,7 +208,9 @@ setReadWriteAccessor( Autosize.prototype, 'type', getType, setType );
 * var v = autosize.toJSON();
 * // returns {...}
 */
-setReadOnly( Autosize.prototype, 'toJSON', toJSON );
+setReadOnly( Autosize.prototype, 'toJSON', function toJSON() {
+	return instance2json( this, properties );
+});
 
 
 // EXPORTS //

lib/node_modules/@stdlib/plot/vega/autosize/lib/resize/set.js

@@ -25,6 +25,7 @@
 var logger = require( 'debug' );
 var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
 var format = require( '@stdlib/string/format' );
+var changeEvent = require( './../change_event.js' );
 
 
 // VARIABLES //
@@ -49,7 +50,7 @@ function set( value ) {
 	if ( value !== this._resize ) {
 		debug( 'Current value: %s. New value: %s.', this._resize, value );
 		this._resize = value;
-		this.emit( 'change' );
+		this.emit( 'change', changeEvent( 'resize' ) );
 	}
 }
 

lib/node_modules/@stdlib/plot/vega/autosize/lib/to_json.js

@@ -27,6 +27,7 @@ var isAutosizeType = require( '@stdlib/plot/vega/base/assert/is-autosize-type' )
 var join = require( '@stdlib/array/base/join' );
 var autosizeTypes = require( '@stdlib/plot/vega/base/autosize-types' );
 var format = require( '@stdlib/string/format' );
+var changeEvent = require( './../change_event.js' );
 
 
 // VARIABLES //
@@ -51,7 +52,7 @@ function set( value ) {
 	if ( value !== this._type ) {
 		debug( 'Current value: %s. New value: %s.', this._type, value );
 		this._type = value;
-		this.emit( 'change' );
+		this.emit( 'change', changeEvent( 'type' ) );
 	}
 }