office-ui-fabric-react/lib-amd/utilities/string.js

Reusable React components for building experiences for Office 365.

define(["require", "exports"], function (require, exports) {
    "use strict";
    // Regex that finds { and } so they can be removed on a lookup for string format
    var FORMAT_ARGS_REGEX = /[\{\}]/g;
    // Regex that finds {#} so it can be replaced by the arguments in string format
    var FORMAT_REGEX = /\{\d+\}/g;
    /**
     * String Format is like C# string format.
     * Usage Example: "hello {0}!".format("mike") will return "hello mike!"
     * Calling format on a string with less arguments than specified in the format is invalid
     * Example "I love {0} every {1}".format("CXP") will result in a Debug Exception.
     */
    function format(s) {
        'use strict';
        var values = [];
        for (var _i = 1; _i < arguments.length; _i++) {
            values[_i - 1] = arguments[_i];
        }
        var args = values;
        // Callback match function
        function replace_func(match) {
            // looks up in the args
            var replacement = args[match.replace(FORMAT_ARGS_REGEX, '')];
            // catches undefined in nondebug and null in debug and nondebug
            if (replacement === null || replacement === undefined) {
                replacement = '';
            }
            return replacement;
        }
        return (s.replace(FORMAT_REGEX, replace_func));
    }
    exports.format = format;
});