strings.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * @license
 * Copyright Google Inc. 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
 */
const STRING_DASHERIZE_REGEXP = (/[ _]/g);
const STRING_DECAMELIZE_REGEXP = (/([a-z\d])([A-Z])/g);
const STRING_CAMELIZE_REGEXP = (/(-|_|\.|\s)+(.)?/g);
const STRING_UNDERSCORE_REGEXP_1 = (/([a-z\d])([A-Z]+)/g);
const STRING_UNDERSCORE_REGEXP_2 = (/-|\s+/g);
/**
 * Converts a camelized string into all lower case separated by underscores.
 *
 ```javascript
 decamelize('innerHTML');         // 'inner_html'
 decamelize('action_name');       // 'action_name'
 decamelize('css-class-name');    // 'css-class-name'
 decamelize('my favorite items'); // 'my favorite items'
 ```

 @method decamelize
 @param {String} str The string to decamelize.
 @return {String} the decamelized string.
 */
function decamelize(str) {
    return str.replace(STRING_DECAMELIZE_REGEXP, '$1_$2').toLowerCase();
}
exports.decamelize = decamelize;
/**
 Replaces underscores, spaces, or camelCase with dashes.

 ```javascript
 dasherize('innerHTML');         // 'inner-html'
 dasherize('action_name');       // 'action-name'
 dasherize('css-class-name');    // 'css-class-name'
 dasherize('my favorite items'); // 'my-favorite-items'
 ```

 @method dasherize
 @param {String} str The string to dasherize.
 @return {String} the dasherized string.
 */
function dasherize(str) {
    return decamelize(str).replace(STRING_DASHERIZE_REGEXP, '-');
}
exports.dasherize = dasherize;
/**
 Returns the lowerCamelCase form of a string.

 ```javascript
 camelize('innerHTML');          // 'innerHTML'
 camelize('action_name');        // 'actionName'
 camelize('css-class-name');     // 'cssClassName'
 camelize('my favorite items');  // 'myFavoriteItems'
 camelize('My Favorite Items');  // 'myFavoriteItems'
 ```

 @method camelize
 @param {String} str The string to camelize.
 @return {String} the camelized string.
 */
function camelize(str) {
    return str
        .replace(STRING_CAMELIZE_REGEXP, (_match, _separator, chr) => {
        return chr ? chr.toUpperCase() : '';
    })
        .replace(/^([A-Z])/, (match) => match.toLowerCase());
}
exports.camelize = camelize;
/**
 Returns the UpperCamelCase form of a string.

 ```javascript
 'innerHTML'.classify();          // 'InnerHTML'
 'action_name'.classify();        // 'ActionName'
 'css-class-name'.classify();     // 'CssClassName'
 'my favorite items'.classify();  // 'MyFavoriteItems'
 ```

 @method classify
 @param {String} str the string to classify
 @return {String} the classified string
 */
function classify(str) {
    return str.split('.').map(part => capitalize(camelize(part))).join('.');
}
exports.classify = classify;
/**
 More general than decamelize. Returns the lower\_case\_and\_underscored
 form of a string.

 ```javascript
 'innerHTML'.underscore();          // 'inner_html'
 'action_name'.underscore();        // 'action_name'
 'css-class-name'.underscore();     // 'css_class_name'
 'my favorite items'.underscore();  // 'my_favorite_items'
 ```

 @method underscore
 @param {String} str The string to underscore.
 @return {String} the underscored string.
 */
function underscore(str) {
    return str
        .replace(STRING_UNDERSCORE_REGEXP_1, '$1_$2')
        .replace(STRING_UNDERSCORE_REGEXP_2, '_')
        .toLowerCase();
}
exports.underscore = underscore;
/**
 Returns the Capitalized form of a string

 ```javascript
 'innerHTML'.capitalize()         // 'InnerHTML'
 'action_name'.capitalize()       // 'Action_name'
 'css-class-name'.capitalize()    // 'Css-class-name'
 'my favorite items'.capitalize() // 'My favorite items'
 ```

 @method capitalize
 @param {String} str The string to capitalize.
 @return {String} The capitalized string.
 */
function capitalize(str) {
    return str.charAt(0).toUpperCase() + str.substr(1);
}
exports.capitalize = capitalize;
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