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* @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.
*/
/* eslint-disable no-invalid-this */
'use strict';
// MODULES //
var logger = require( 'debug' );
var isDeepEqual = require( '@stdlib/assert/deep-equal' );
var isInterpolationMethod = require( '@stdlib/plot/vega/base/assert/is-scale-range-interpolation-method' );
var isObject = require( '@stdlib/assert/is-object' );
var isUndefined = require( '@stdlib/assert/is-undefined' );
var copy = require( '@stdlib/utils/copy' );
var format = require( '@stdlib/string/format' );
var changeEvent = require( './../change_event.js' );
var prop = require( './properties.js' );
// VARIABLES //
var debug = logger( 'vega:scale:set:'+prop.name );
// MAIN //
/**
* Sets the scale range interpolation method.
*
* ## Notes
*
* - Providing `undefined` "unsets" the configured value.
*
* @private
* @param {(string|Object|void)} value - input value
* @throws {TypeError} must be a valid interpolation method
* @returns {void}
*/
function set( value ) {
var flg = isInterpolationMethod( value );
if ( !flg && !isObject( value ) && !isUndefined( value ) ) {
throw new TypeError( format( 'invalid assignment. `%s` must be either an object or a valid interpolation method. Value: `%s`.', prop.name, value ) );
}
// TODO: explore whether we can be more intelligent when performing deep equality checks for an interpolation object rather than relying on a general deep equality check.
if ( !isDeepEqual( value, this[ prop.private ] ) ) {
value = copy( value );
debug( 'Current value: %s. New value: %s.', this[ prop.private ], value );
this[ prop.private ] = value;
this.emit( 'change', changeEvent( prop.name ) );
}
}
// EXPORTS //
module.exports = set;
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