@nestjs/common/services/utils/is-log-level-enabled.util.js

Nest - modern, fast, powerful node.js web framework (@common)

const LOG_LEVEL_VALUES = {
    verbose: 0,
    debug: 1,
    log: 2,
    warn: 3,
    error: 4,
    fatal: 5,
};
/**
 * Checks if target level is enabled.
 * @param targetLevel target level
 * @param logLevels array of enabled log levels
 */
export function isLogLevelEnabled(targetLevel, logLevels) {
    if (!logLevels || (Array.isArray(logLevels) && logLevels?.length === 0)) {
        return false;
    }
    if (logLevels.includes(targetLevel)) {
        return true;
    }
    let highestLogLevelValue = -Infinity;
    for (const level of logLevels) {
        const v = LOG_LEVEL_VALUES[level];
        if (v > highestLogLevelValue)
            highestLogLevelValue = v;
    }
    const targetLevelValue = LOG_LEVEL_VALUES[targetLevel];
    return targetLevelValue >= highestLogLevelValue;
}