38 lines
951 B
JavaScript
38 lines
951 B
JavaScript
const vm = require('vm');
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/**
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* This function uses Node's `vm` modules to evaluate the `module.exports` of a given source string
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*
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* Example:
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*
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* ```javascript
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* const { exports: moduleExports } = evaluateModuleFromSource("const foo = 7;\n module.exports.bar = 10 + foo;");
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*
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* assert(moduleExports.bar === 17);
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* ```
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*
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* @param {String} source to be evaluated using Node's `vm` modules
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* @param {{ require: Function }} options used in the context during evaluation of the Node module
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* @returns {{ exports: any }} exports added to the script's `module.exports` context
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*/
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const evaluateModuleFromSource = (source, { require } = {}) => {
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const context = {
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module: {
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exports: {},
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},
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require,
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};
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try {
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const script = new vm.Script(source);
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script.runInNewContext(context);
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} catch (e) {
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console.error(e);
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throw e;
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}
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return context.module;
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};
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module.exports = { evaluateModuleFromSource };
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