next/dist/esm/server/app-render/required-scripts.js

The React Framework

import { encodeURIPath } from '../../shared/lib/encode-uri-path';
import ReactDOM from 'react-dom';
export function getRequiredScripts(buildManifest, assetPrefix, crossOrigin, SRIManifest, qs, nonce, pagePath) {
    var _buildManifest_rootMainFilesTree;
    let preinitScripts;
    let preinitScriptCommands = [];
    const bootstrapScript = {
        src: '',
        crossOrigin
    };
    const files = (((_buildManifest_rootMainFilesTree = buildManifest.rootMainFilesTree) == null ? void 0 : _buildManifest_rootMainFilesTree[pagePath]) || buildManifest.rootMainFiles).map(encodeURIPath);
    if (files.length === 0) {
        throw Object.defineProperty(new Error('Invariant: missing bootstrap script. This is a bug in Next.js'), "__NEXT_ERROR_CODE", {
            value: "E459",
            enumerable: false,
            configurable: true
        });
    }
    if (SRIManifest) {
        bootstrapScript.src = `${assetPrefix}/_next/` + files[0] + qs;
        bootstrapScript.integrity = SRIManifest[files[0]];
        for(let i = 1; i < files.length; i++){
            const src = `${assetPrefix}/_next/` + files[i] + qs;
            const integrity = SRIManifest[files[i]];
            preinitScriptCommands.push(src, integrity);
        }
        preinitScripts = ()=>{
            // preinitScriptCommands is a double indexed array of src/integrity pairs
            for(let i = 0; i < preinitScriptCommands.length; i += 2){
                ReactDOM.preinit(preinitScriptCommands[i], {
                    as: 'script',
                    integrity: preinitScriptCommands[i + 1],
                    crossOrigin,
                    nonce
                });
            }
        };
    } else {
        bootstrapScript.src = `${assetPrefix}/_next/` + files[0] + qs;
        for(let i = 1; i < files.length; i++){
            const src = `${assetPrefix}/_next/` + files[i] + qs;
            preinitScriptCommands.push(src);
        }
        preinitScripts = ()=>{
            // preinitScriptCommands is a singled indexed array of src values
            for(let i = 0; i < preinitScriptCommands.length; i++){
                ReactDOM.preinit(preinitScriptCommands[i], {
                    as: 'script',
                    nonce,
                    crossOrigin
                });
            }
        };
    }
    return [
        preinitScripts,
        bootstrapScript
    ];
}

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