next/dist/esm/build/print-build-errors.js

The React Framework

import { formatIssue, isRelevantWarning } from '../shared/lib/turbopack/utils';
export function formatWarningsHeader(count) {
    return `Turbopack build encountered ${count} ${count === 1 ? 'warning' : 'warnings'}:`;
}
/**
 * Processes and reports build issues from Turbopack entrypoints.
 *
 * @param entrypoints - The result object containing build issues to process.
 * @param isDev - A flag indicating if the build is running in development mode.
 * @param opts.deferWarnings - When true, warnings are returned instead of
 *                             printed so the caller can print them later.
 * @return The formatted warnings when `deferWarnings` is set and nothing threw.
 * @throws {Error} If a fatal issue is encountered, this function throws an error. In development mode, we only throw on
 *                 'fatal' and 'bug' issues. In production mode, we also throw on 'error' issues.
 */ export function printBuildErrors(entrypoints, isDev, opts) {
    // Issues that we want to stop the server from executing
    const topLevelFatalIssues = [];
    // Issues that are true errors, but we believe we can keep running and allow the user to address the issue
    const topLevelErrors = [];
    // Issues that are warnings but should not affect the running of the build
    const topLevelWarnings = [];
    // Track seen formatted error messages to avoid duplicates
    const seenFatalIssues = new Set();
    const seenErrors = new Set();
    const seenWarnings = new Set();
    for (const issue of entrypoints.issues){
        // We only want to completely shut down the server
        if (issue.severity === 'fatal' || issue.severity === 'bug') {
            const formatted = formatIssue(issue);
            if (!seenFatalIssues.has(formatted)) {
                seenFatalIssues.add(formatted);
                topLevelFatalIssues.push(formatted);
            }
        } else if (isRelevantWarning(issue)) {
            const formatted = formatIssue(issue);
            if (!seenWarnings.has(formatted)) {
                seenWarnings.add(formatted);
                topLevelWarnings.push(formatted);
            }
        } else if (issue.severity === 'error') {
            const formatted = formatIssue(issue);
            if (isDev) {
                // We want to treat errors as recoverable in development
                // so that we can show the errors in the site and allow users
                // to respond to the errors when necessary. In production builds
                // though we want to error out and stop the build process.
                if (!seenErrors.has(formatted)) {
                    seenErrors.add(formatted);
                    topLevelErrors.push(formatted);
                }
            } else {
                if (!seenFatalIssues.has(formatted)) {
                    seenFatalIssues.add(formatted);
                    topLevelFatalIssues.push(formatted);
                }
            }
        }
    }
    // TODO: print in order by source location so issues from the same file are displayed together and then add a summary at the end about the number of warnings/errors
    const deferWarnings = ((opts == null ? void 0 : opts.deferWarnings) ?? false) && topLevelFatalIssues.length === 0;
    if (topLevelWarnings.length > 0 && !deferWarnings) {
        console.warn(`${formatWarningsHeader(topLevelWarnings.length)}\n${topLevelWarnings.join('\n')}`);
    }
    if (topLevelErrors.length > 0) {
        console.error(`Turbopack build encountered ${topLevelErrors.length} ${topLevelErrors.length === 1 ? 'error' : 'errors'}:\n${topLevelErrors.join('\n')}`);
    }
    if (topLevelFatalIssues.length > 0) {
        throw Object.defineProperty(new Error(`Turbopack build failed with ${topLevelFatalIssues.length} ${topLevelFatalIssues.length === 1 ? 'error' : 'errors'}:\n${topLevelFatalIssues.join('\n')}`), "__NEXT_ERROR_CODE", {
            value: "E1366",
            enumerable: false,
            configurable: true
        });
    }
    return {
        warnings: deferWarnings ? topLevelWarnings : []
    };
}

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