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webpack.langLoader.js
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webpack.langLoader.js
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/* eslint-disable no-param-reassign */
// https://webpack.js.org/contribute/writing-a-loader/
// eslint-disable-next-line @typescript-eslint/no-unused-vars
function replaceFunction(str = "", funcName = "", callback = (...args) => "") {
let i = 0;
while (i > -1) {
i = str.indexOf(`${funcName}(`, i);
if (i !== -1) {
let n = i + funcName.length + 1;
const start = n;
let cnt = 1;
while (++n > -1) {
const char = str[n];
if (char === "(") {
++cnt;
} else if (char === ")") {
--cnt;
if (cnt === 0) {
const replaceStr = callback.apply(this, str.substring(start, n).split(","));
const prevLen = str.length;
str = `${str.substring(0, i)}${replaceStr}${str.substring(n + 1)}`;
i = n + 1 - (prevLen - str.length);
break;
}
}
}
}
}
return str;
}
/** Loader that can replace some content */
module.exports = function WebpackLangLoader(source = "stringContext") {
// https://stackoverflow.com/questions/18906514/regex-for-matching-functions-and-capturing-their-arguments
// replace __wupln($1,$2) with $1
// source = source.replace(/__wupln\(([^,\n\r]+).*\)/g, "$1");
source = replaceFunction(source, "__wupln", (...args) => args[0]); // tied with helpers/lang.ts + web-ui-pack
return source;
};