next/dist/build/compiler.js

The React Framework

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.runCompiler = runCompiler;
var _webpack = require("next/dist/compiled/webpack/webpack");
function generateStats(result, stat) {
    const { errors , warnings  } = stat.toJson({
        preset: "errors-warnings",
        moduleTrace: true
    });
    if (errors && errors.length > 0) {
        result.errors.push(...errors);
    }
    if (warnings && warnings.length > 0) {
        result.warnings.push(...warnings);
    }
    return result;
}
// Webpack 5 requires the compiler to be closed (to save caches)
// Webpack 4 does not have this close method so in order to be backwards compatible we check if it exists
function closeCompiler(compiler) {
    return new Promise((resolve, reject)=>{
        // @ts-ignore Close only exists on the compiler in webpack 5
        return compiler.close((err)=>err ? reject(err) : resolve());
    });
}
function runCompiler(config, { runWebpackSpan  }) {
    return new Promise((resolve, reject)=>{
        const compiler = (0, _webpack).webpack(config);
        compiler.run((err, stats)=>{
            const webpackCloseSpan = runWebpackSpan.traceChild("webpack-close", {
                name: config.name
            });
            webpackCloseSpan.traceAsyncFn(()=>closeCompiler(compiler)).then(()=>{
                if (err) {
                    var _stack;
                    const reason = (_stack = err.stack) != null ? _stack : err.toString();
                    if (reason) {
                        return resolve({
                            errors: [
                                {
                                    message: reason,
                                    details: err.details
                                }
                            ],
                            warnings: [],
                            stats
                        });
                    }
                    return reject(err);
                } else if (!stats) throw new Error("No Stats from webpack");
                const result = webpackCloseSpan.traceChild("webpack-generate-error-stats").traceFn(()=>generateStats({
                        errors: [],
                        warnings: [],
                        stats
                    }, stats));
                return resolve(result);
            });
        });
    });
}

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