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module-from-string
Advanced tools
Load module from string, require and import.
npm install module-from-string
import { requireFromString, importFromString } from 'module-from-string'
requireFromString("module.exports = 'hi'") // => 'hi'
requireFromString("exports.greet = 'hi'") // => { greet: 'hi' }
;(async () => {
await importFromString("export default 'hi'" ) // => { default: 'hi' }
await importFromString("export const greet = 'hi'") // => { greet: 'hi' }
})()
import { TransformOptions } from 'esbuild'
interface Options {
code: string
globals?: Record<string, unknown>
}
declare const requireFromString: (options: string | Options) => any
interface ImportOptions extends Options {
transformOptions?: TransformOptions
}
declare const importFromString: (
options: string | ImportOptions
) => Promise<any>
declare const importFromStringSync: (options: string | ImportOptions) => any
export { importFromString, importFromStringSync, requireFromString }
Underneath the hood, module-from-string
uses Node.js built-in vm
module to execute code.
const contextModule = new Module(nanoid())
vm.runInNewContext(code, {
exports: contextModule.exports,
module: contextModule,
require,
...globals
})
By default, only the above variables are passed into the contextObject
. In order to use other global objects and built-in modules you need to add them to option globals
.
requireFromString({
code: 'module.exports = process.cwd()',
globals: { process }
})
importFromStringSync({
code: 'export default process.cwd()',
globals: { process }
})
Function importFromString
and importFromStringSync
use esbuild to transform ES Module syntax to CommonJS. So it can do much more by providing transform options to esbuild. See esbuild Transform API for documentation.
const { greet } = importFromStringSync({
code: "export const greet: () => string = () => 'hi'",
transformOptions: { loader: 'ts' }
})
greet() // => 'hi'
MIT License © 2021 Exuanbo
FAQs
Load module from string using require or import.
The npm package module-from-string receives a total of 18,462 weekly downloads. As such, module-from-string popularity was classified as popular.
We found that module-from-string demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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