mirror of https://github.com/actions/setup-python
209 lines
7.9 KiB
JavaScript
209 lines
7.9 KiB
JavaScript
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(function(window) {
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var re = {
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not_string: /[^s]/,
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number: /[diefg]/,
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json: /[j]/,
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not_json: /[^j]/,
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text: /^[^\x25]+/,
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modulo: /^\x25{2}/,
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placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/,
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key: /^([a-z_][a-z_\d]*)/i,
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key_access: /^\.([a-z_][a-z_\d]*)/i,
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index_access: /^\[(\d+)\]/,
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sign: /^[\+\-]/
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}
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function sprintf() {
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var key = arguments[0], cache = sprintf.cache
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if (!(cache[key] && cache.hasOwnProperty(key))) {
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cache[key] = sprintf.parse(key)
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}
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return sprintf.format.call(null, cache[key], arguments)
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}
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sprintf.format = function(parse_tree, argv) {
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var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
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for (i = 0; i < tree_length; i++) {
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node_type = get_type(parse_tree[i])
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if (node_type === "string") {
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output[output.length] = parse_tree[i]
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}
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else if (node_type === "array") {
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match = parse_tree[i] // convenience purposes only
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if (match[2]) { // keyword argument
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arg = argv[cursor]
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for (k = 0; k < match[2].length; k++) {
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if (!arg.hasOwnProperty(match[2][k])) {
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throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
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}
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arg = arg[match[2][k]]
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}
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}
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else if (match[1]) { // positional argument (explicit)
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arg = argv[match[1]]
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}
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else { // positional argument (implicit)
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arg = argv[cursor++]
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}
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if (get_type(arg) == "function") {
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arg = arg()
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}
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if (re.not_string.test(match[8]) && re.not_json.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
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throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
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}
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if (re.number.test(match[8])) {
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is_positive = arg >= 0
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}
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switch (match[8]) {
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case "b":
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arg = arg.toString(2)
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break
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case "c":
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arg = String.fromCharCode(arg)
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break
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case "d":
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case "i":
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arg = parseInt(arg, 10)
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break
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case "j":
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arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0)
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break
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case "e":
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arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
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break
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case "f":
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arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
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break
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case "g":
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arg = match[7] ? parseFloat(arg).toPrecision(match[7]) : parseFloat(arg)
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break
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case "o":
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arg = arg.toString(8)
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break
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case "s":
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arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
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break
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case "u":
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arg = arg >>> 0
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break
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case "x":
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arg = arg.toString(16)
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break
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case "X":
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arg = arg.toString(16).toUpperCase()
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break
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}
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if (re.json.test(match[8])) {
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output[output.length] = arg
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}
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else {
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if (re.number.test(match[8]) && (!is_positive || match[3])) {
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sign = is_positive ? "+" : "-"
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arg = arg.toString().replace(re.sign, "")
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}
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else {
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sign = ""
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}
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pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
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pad_length = match[6] - (sign + arg).length
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pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
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output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
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}
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}
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}
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return output.join("")
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}
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sprintf.cache = {}
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sprintf.parse = function(fmt) {
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var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
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while (_fmt) {
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if ((match = re.text.exec(_fmt)) !== null) {
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parse_tree[parse_tree.length] = match[0]
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}
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else if ((match = re.modulo.exec(_fmt)) !== null) {
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parse_tree[parse_tree.length] = "%"
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}
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else if ((match = re.placeholder.exec(_fmt)) !== null) {
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if (match[2]) {
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arg_names |= 1
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var field_list = [], replacement_field = match[2], field_match = []
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if ((field_match = re.key.exec(replacement_field)) !== null) {
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field_list[field_list.length] = field_match[1]
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while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
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if ((field_match = re.key_access.exec(replacement_field)) !== null) {
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field_list[field_list.length] = field_match[1]
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}
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else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
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field_list[field_list.length] = field_match[1]
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}
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else {
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throw new SyntaxError("[sprintf] failed to parse named argument key")
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}
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}
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}
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else {
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throw new SyntaxError("[sprintf] failed to parse named argument key")
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}
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match[2] = field_list
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}
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else {
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arg_names |= 2
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}
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if (arg_names === 3) {
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throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
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}
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parse_tree[parse_tree.length] = match
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}
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else {
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throw new SyntaxError("[sprintf] unexpected placeholder")
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}
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_fmt = _fmt.substring(match[0].length)
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}
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return parse_tree
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}
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var vsprintf = function(fmt, argv, _argv) {
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_argv = (argv || []).slice(0)
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_argv.splice(0, 0, fmt)
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return sprintf.apply(null, _argv)
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}
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/**
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* helpers
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*/
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function get_type(variable) {
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return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
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}
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function str_repeat(input, multiplier) {
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return Array(multiplier + 1).join(input)
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}
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/**
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* export to either browser or node.js
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*/
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if (typeof exports !== "undefined") {
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exports.sprintf = sprintf
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exports.vsprintf = vsprintf
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}
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else {
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window.sprintf = sprintf
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window.vsprintf = vsprintf
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if (typeof define === "function" && define.amd) {
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define(function() {
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return {
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sprintf: sprintf,
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vsprintf: vsprintf
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}
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})
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}
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}
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})(typeof window === "undefined" ? this : window);
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