/**
 * @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
 */
import { ElementRef } from '@angular/core';

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * Coerces a data-bound value (typically a string) to a boolean.
 * @param {?} value
 * @return {?}
 */
function coerceBooleanProperty(value) {
    return value != null && "" + value !== 'false';
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * @param {?} value
 * @param {?=} fallbackValue
 * @return {?}
 */
function coerceNumberProperty(value, fallbackValue) {
    if (fallbackValue === void 0) { fallbackValue = 0; }
    return _isNumberValue(value) ? Number(value) : fallbackValue;
}
/**
 * Whether the provided value is considered a number.
 * \@docs-private
 * @param {?} value
 * @return {?}
 */
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((/** @type {?} */ (value)))) && !isNaN(Number(value));
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * Wraps the provided value in an array, unless the provided value is an array.
 * @template T
 * @param {?} value
 * @return {?}
 */
function coerceArray(value) {
    return Array.isArray(value) ? value : [value];
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * Coerces a value to a CSS pixel value.
 * @param {?} value
 * @return {?}
 */
function coerceCssPixelValue(value) {
    if (value == null) {
        return '';
    }
    return typeof value === 'string' ? value : value + "px";
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Coerces an ElementRef or an Element into an element.
 * Useful for APIs that can accept either a ref or the native element itself.
 * @template T
 * @param {?} elementOrRef
 * @return {?}
 */
function coerceElement(elementOrRef) {
    return elementOrRef instanceof ElementRef ? elementOrRef.nativeElement : elementOrRef;
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

export { coerceBooleanProperty, coerceNumberProperty, _isNumberValue, coerceArray, coerceCssPixelValue, coerceElement };
//# sourceMappingURL=coercion.es5.js.map