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remove-named-imports.js
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remove-named-imports.js
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import fs from "node:fs/promises";
import { extname } from "node:path";
const generate_names = (function* generate_names() {
const base_name = "____unique_import_";
let count = 0;
while (true) {
yield `${base_name}${count}`;
count++;
}
})();
export function removeNamedImports(content) {
const named_and_default_regex =
/^import\s+((\S+),\s+)?({\s*[^}]+})\s+from\s+("[^"]+");\s*$/gm;
return content.replace(
named_and_default_regex,
(_, default_import_name, __, all_named, module_path) => {
/* eslint-disable */
const new_name = generate_names.next().value;
const result =
`import * as ${new_name} from ${module_path}${
default_import_name
? `; const ${default_import_name.replace(
",",
""
)} = ${new_name}.default || ${new_name};`
: ""
};` +
all_named
.match(/[a-zA-Z_$][^,}]+/g)
.map((importname) => {
if (importname.startsWith("default as")) {
return `const ${importname.replace(
"default as ",
""
)} = ${new_name}?.default || ${new_name};`;
}
if (importname.match(/([^{]*)\sas\s([^}]*)/)) {
// is "import {asdfas as somethong_else}
const [_, original, named] =
importname.match(/([^{]*)\sas\s([^}]*)/);
return `const ${named} = ${new_name}?.default?.${original} || ${new_name}?.${original}`;
}
return `const ${importname} = ${new_name}?.default?.${importname} || ${new_name}?.${importname};`;
})
.join("; ");
return result;
/* eslint-enable */
}
);
}
export const remove_named_imports_plugin = {
name: "remove-named-imports", // named imports sometime cause some esm incompatibilities, like the "is a CommonJS module, which may not support all module.exports as named exports." error
setup(build) {
build.onLoad({ filter: /\.[t]sx?$/ }, async ({ path }) => {
const content = await fs.readFile(path, "utf-8");
const contents = removeNamedImports(content);
return {
pluginData: {
contents,
},
loader: extname(path) === ".tsx" ? "tsx" : "ts",
};
});
},
};

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