script.sourceMapURL

• <string> | <undefined>

当脚本从包含源映射魔术注释的源编译时,此属性将设置为源映射的 URL。

\When the script is compiled from a source that contains a source map magic comment, this property will be set to the URL of the source map.

import vm from 'node:vm';
const script = new vm.Script(`
function myFunc() {}
//# sourceMappingURL=sourcemap.json
`);
console.log(script.sourceMapURL);
// Prints: sourcemap.jsonconst vm = require('node:vm');
const script = new vm.Script(`
function myFunc() {}
//# sourceMappingURL=sourcemap.json
`);
console.log(script.sourceMapURL);
// Prints: sourcemap.json拷贝