Native nodejs require

[lal12]

Hey,

I want to dynamically load a json config and some plugins via require. However rollup-plugin-commonjs replaces all references to require, so it will just throw an error, that dynamic requires are not supported. Is there any way to access the native require function? Webpack has a special variable for this: __non_webpack_require__. Currently I am using eval('require')('my-plugin'), but this doesn't seem to be the nicest solution...

[lukastaegert]

If you know the ids you want to load dynamically, I believe this is what the ignore option is for.

[lal12]

No I am loading every file in a directory, so I don't know them at compile time.

[lal12]

Wrote a small plugin which achieves the wished functionality:

const nativeRequire = (plgOpts = {})=>{
    const alias = (plgOpts || {}).alias || "__non_rollup_require__"
    return {
        name: 'native-require',
        renderChunk(code, chunk, options){
            if(!alias.match(/^[_a-zA-Z][_a-zA-Z0-9]+$/))
                this.error("alias '"+alias+"' is not a valid variable name!");
            const addReqAlias = 'const '+alias+' = require;\n';
            let match = code.match(/^['"]use strict['"].*;\s*\n/);
            let map = {mappings: ';;'};
            if(match){
                let useStrict = code.substr(0, match[0].length);
                code = useStrict + addReqAlias + code.substr(match[0].length);
            }else{
                code = addReqAlias + code;
            }
            return {code, map};
        }
    }
};