frontend/node_modules/next/dist/esm/client/lib/console.js

import isError from '../../lib/is-error';
function formatObject(arg, depth) {
    switch(typeof arg){
        case 'object':
            if (arg === null) {
                return 'null';
            } else if (Array.isArray(arg)) {
                let result = '[';
                if (depth < 1) {
                    for(let i = 0; i < arg.length; i++){
                        if (result !== '[') {
                            result += ',';
                        }
                        if (Object.prototype.hasOwnProperty.call(arg, i)) {
                            result += formatObject(arg[i], depth + 1);
                        }
                    }
                } else {
                    result += arg.length > 0 ? '...' : '';
                }
                result += ']';
                return result;
            } else if (arg instanceof Error) {
                return arg + '';
            } else {
                const keys = Object.keys(arg);
                let result = '{';
                if (depth < 1) {
                    for(let i = 0; i < keys.length; i++){
                        const key = keys[i];
                        const desc = Object.getOwnPropertyDescriptor(arg, 'key');
                        if (desc && !desc.get && !desc.set) {
                            const jsonKey = JSON.stringify(key);
                            if (jsonKey !== '"' + key + '"') {
                                result += jsonKey + ': ';
                            } else {
                                result += key + ': ';
                            }
                            result += formatObject(desc.value, depth + 1);
                        }
                    }
                } else {
                    result += keys.length > 0 ? '...' : '';
                }
                result += '}';
                return result;
            }
        case 'string':
            return JSON.stringify(arg);
        case 'number':
        case 'bigint':
        case 'boolean':
        case 'symbol':
        case 'undefined':
        case 'function':
        default:
            return String(arg);
    }
}
export function formatConsoleArgs(args) {
    let message;
    let idx;
    if (typeof args[0] === 'string') {
        message = args[0];
        idx = 1;
    } else {
        message = '';
        idx = 0;
    }
    let result = '';
    let startQuote = false;
    for(let i = 0; i < message.length; ++i){
        const char = message[i];
        if (char !== '%' || i === message.length - 1 || idx >= args.length) {
            result += char;
            continue;
        }
        const code = message[++i];
        switch(code){
            case 'c':
                {
                    // TODO: We should colorize with HTML instead of turning into a string.
                    // Ignore for now.
                    result = startQuote ? "" + result + "]" : "[" + result;
                    startQuote = !startQuote;
                    idx++;
                    break;
                }
            case 'O':
            case 'o':
                {
                    result += formatObject(args[idx++], 0);
                    break;
                }
            case 'd':
            case 'i':
                {
                    result += parseInt(args[idx++], 10);
                    break;
                }
            case 'f':
                {
                    result += parseFloat(args[idx++]);
                    break;
                }
            case 's':
                {
                    result += String(args[idx++]);
                    break;
                }
            default:
                result += '%' + code;
        }
    }
    for(; idx < args.length; idx++){
        result += (idx > 0 ? ' ' : '') + formatObject(args[idx], 0);
    }
    return result;
}
export function parseConsoleArgs(args) {
    // See
    // https://github.com/facebook/react/blob/65a56d0e99261481c721334a3ec4561d173594cd/packages/react-devtools-shared/src/backend/flight/renderer.js#L88-L93
    //
    // Logs replayed from the server look like this:
    // [
    //   "%c%s%c%o\n\n%s\n\n%s\n",
    //   "background: #e6e6e6; ...",
    //   " Server ", // can also be e.g. " Prerender "
    //   "",
    //   Error,
    //   "The above error occurred in the <Page> component.",
    //   ...
    // ]
    if (args.length > 3 && typeof args[0] === 'string' && args[0].startsWith('%c%s%c') && typeof args[1] === 'string' && typeof args[2] === 'string' && typeof args[3] === 'string') {
        const environmentName = args[2];
        const maybeError = args[4];
        return {
            environmentName: environmentName.trim(),
            error: isError(maybeError) ? maybeError : null
        };
    }
    return {
        environmentName: null,
        error: null
    };
}

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