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rewriteImports.js
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Thu, Mar 13, 13:44

rewriteImports.js
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import "core-js/modules/es.array.filter";
import "core-js/modules/es.array.for-each";
import "core-js/modules/es.function.name";
import "core-js/modules/es.regexp.exec";
import "core-js/modules/es.string.replace";
import "core-js/modules/es.string.split";
import "core-js/modules/es.string.trim";
import "core-js/modules/web.dom-collections.for-each";
// Temporary copy to fix
// https://github.com/lukeed/rewrite-imports/issues/10
var UNNAMED = /import\s*['"]([^'"]+)['"];?/gi;
var NAMED = /import\s*(\*\s*as)?\s*(\w*?)\s*,?\s*(?:\{([\s\S]*?)\})?\s*from\s*['"]([^'"]+)['"];?/gi;
function alias(key) {
key = key.trim();
var name = key.split(' as ');
if (name.length > 1) {
key = name.shift();
}
return {
key: key,
name: name[0]
};
}
var num;
function generate(keys, dep, base, fn) {
var tmp = dep.replace(/\W/g, '_') + '$' + num++; // uniqueness
var name = alias(tmp).name;
dep = fn + "('" + dep + "')";
var obj;
var out = "const " + name + " = " + dep + ";";
if (base) {
out += "\nconst " + base + " = " + tmp + ".default || " + tmp + ";";
}
keys.forEach(function (key) {
obj = alias(key);
out += "\nconst " + obj.name + " = " + tmp + "." + obj.key + ";";
});
return out;
}
export default function (str, fn) {
if (fn === void 0) {
fn = 'require';
}
num = 0;
return str.replace(NAMED, function (_, asterisk, base, req, dep) {
return generate(req ? req.split(',').filter(function (d) {
return d.trim();
}) : [], dep, base, fn);
}).replace(UNNAMED, function (_, dep) {
return fn + "('" + dep + "');";
});
}

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