| 1 | import polyfills from 'node-libs-browser';
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| 2 | import {builtinModules} from 'module';
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| 3 |
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| 4 | const empty = require.resolve('./_empty.js');
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| 5 |
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| 6 | let builtins = Object.create(null);
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| 7 | // use definite (current) list of Node builtins
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| 8 | for (let key of builtinModules) {
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| 9 | builtins[key] = empty;
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| 10 | }
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| 11 | // load the polyfill where available
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| 12 | for (let key in polyfills) {
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| 13 | builtins[key] = polyfills[key] || empty;
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| 14 | }
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| 15 |
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| 16 | export default builtins;
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