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import { ElementRef } from '@angular/core';
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/** Coerces a data-bound value (typically a string) to a boolean. */
function coerceBooleanProperty(value) {
return value != null && `${value}` !== 'false';
}
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
function coerceNumberProperty(value, fallbackValue = 0) {
return _isNumberValue(value) ? Number(value) : fallbackValue;
}
/**
* Whether the provided value is considered a number.
* @docs-private
*/
function _isNumberValue(value) {
// parseFloat(value) handles most of the cases we're interested in (it treats null, empty string,
// and other non-number values as NaN, where Number just uses 0) but it considers the string
// '123hello' to be a valid number. Therefore we also check if Number(value) is NaN.
return !isNaN(parseFloat(value)) && !isNaN(Number(value));
}
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
function coerceArray(value) {
return Array.isArray(value) ? value : [value];
}
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/** Coerces a value to a CSS pixel value. */
function coerceCssPixelValue(value) {
if (value == null) {
return '';
}
return typeof value === 'string' ? value : `${value}px`;
}
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* Coerces an ElementRef or an Element into an element.
* Useful for APIs that can accept either a ref or the native element itself.
*/
function coerceElement(elementOrRef) {
return elementOrRef instanceof ElementRef ? elementOrRef.nativeElement : elementOrRef;
}
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* Coerces a value to an array of trimmed non-empty strings.
* Any input that is not an array, `null` or `undefined` will be turned into a string
* via `toString()` and subsequently split with the given separator.
* `null` and `undefined` will result in an empty array.
* This results in the following outcomes:
* - `null` -> `[]`
* - `[null]` -> `["null"]`
* - `["a", "b ", " "]` -> `["a", "b"]`
* - `[1, [2, 3]]` -> `["1", "2,3"]`
* - `[{ a: 0 }]` -> `["[object Object]"]`
* - `{ a: 0 }` -> `["[object", "Object]"]`
*
* Useful for defining CSS classes or table columns.
* @param value the value to coerce into an array of strings
* @param separator split-separator if value isn't an array
*/
function coerceStringArray(value, separator = /\s+/) {
const result = [];
if (value != null) {
const sourceValues = Array.isArray(value) ? value : `${value}`.split(separator);
for (const sourceValue of sourceValues) {
const trimmedString = `${sourceValue}`.trim();
if (trimmedString) {
result.push(trimmedString);
}
}
}
return result;
}
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
export { _isNumberValue, coerceArray, coerceBooleanProperty, coerceCssPixelValue, coerceElement, coerceNumberProperty, coerceStringArray };
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