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cjs.ts
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cjs.ts
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import { createRequire } from "node:module";
import { dirname } from "node:path";
import { fileURLToPath } from "./utils";
import { isObject } from "./_utils";
export interface CommonjsContext {
__filename: string;
__dirname: string;
// TODO!
// eslint-disable-next-line no-undef
require: NodeRequire;
}
export function createCommonJS(url: string): CommonjsContext {
const __filename = fileURLToPath(url);
const __dirname = dirname(__filename);
// Lazy require
let _nativeRequire: typeof require;
const getNativeRequire = () => {
if (!_nativeRequire) {
_nativeRequire = createRequire(url);
}
return _nativeRequire;
};
function require(id: string): any {
return getNativeRequire()(id);
}
require.resolve = function requireResolve(id: string, options: any): string {
return getNativeRequire().resolve(id, options);
};
return {
__filename,
__dirname,
require,
} as CommonjsContext;
}
export function interopDefault(
sourceModule: any,
opts: { preferNamespace?: boolean } = {},
): any {
if (!isObject(sourceModule) || !("default" in sourceModule)) {
return sourceModule;
}
const defaultValue = sourceModule.default;
if (defaultValue === undefined || defaultValue === null) {
return sourceModule;
}
if (typeof defaultValue !== "object") {
return opts.preferNamespace ? sourceModule : defaultValue;
}
for (const key in sourceModule) {
if (key === "default") {
try {
if (!(key in defaultValue)) {
Object.defineProperty(defaultValue, key, {
enumerable: false,
configurable: false,
get() {
return defaultValue;
},
});
}
} catch {}
} else {
try {
if (!(key in defaultValue)) {
Object.defineProperty(defaultValue, key, {
enumerable: true,
configurable: true,
get() {
return sourceModule[key];
},
});
}
} catch {}
}
}
return defaultValue;
}