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/**
 * @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
 */
/**
 * Transforms a value (typically a string) to a boolean.
 * Intended to be used as a transform function of an input.
 *
 *  @usageNotes
 *  ```typescript
 *  @Input({ transform: booleanAttribute }) status!: boolean;
 *  ```
 * @param value Value to be transformed.
 *
 * @publicApi
 */
export function booleanAttribute(value) {
    return typeof value === 'boolean' ? value : value != null && value !== 'false';
}
/**
 * Transforms a value (typically a string) to a number.
 * Intended to be used as a transform function of an input.
 * @param value Value to be transformed.
 * @param fallbackValue Value to use if the provided value can't be parsed as a number.
 *
 *  @usageNotes
 *  ```typescript
 *  @Input({ transform: numberAttribute }) id!: number;
 *  ```
 *
 * @publicApi
 */
export function numberAttribute(value, fallbackValue = NaN) {
    // 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.
    const isNumberValue = !isNaN(parseFloat(value)) && !isNaN(Number(value));
    return isNumberValue ? Number(value) : fallbackValue;
}
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