@neodx/log/utils/index.mjs

A lightweight universal logging framework

import { n as hasOwn } from '../_internal/read-arguments-BklHPmep.mjs';
export {
  c as createLoggerAutoFactory,
  r as readArguments
} from '../_internal/read-arguments-BklHPmep.mjs';

/**
 * Safe version of JSON.stringify, prevents circular refs
 * @example serializeJSON({ record: { value: 1, name: 'age' }, valid: false })
 */ const serializeJSON = (value, space) => JSON.stringify(value, createJSONReplacer(), space);
const cycleRef = (tokens = []) => `[Circular${tokens.length > 0 ? ' ' + tokens.join('.') : ''}]`;
function createJSONReplacer() {
  const stack = [];
  const keys = [];
  const getCircularKey = index => cycleRef(index > 0 ? keys.slice(0, index) : []);
  return function replacer(key, value) {
    if (stack.length === 0) {
      stack.push(value);
      return value;
    }
    const thisIndex = stack.indexOf(this);
    const thisInStack = thisIndex >= 0;
    if (thisInStack) {
      stack.splice(thisIndex + 1);
      keys.splice(thisIndex, Infinity, key);
    } else {
      stack.push(this);
      keys.push(key);
    }
    if (stack.includes(value)) {
      return getCircularKey(stack.indexOf(value));
    }
    return value;
  };
}

/**
 * Tiny implementation of printf function.
 * Supports only "%s" (string) and "%d" (number).
 * @see https://github.com/floatdrop/pff
 * @example printf('%s in %ds.', ['Done', 12]) => "Done on 12s."
 */ function printf(template, replaces) {
  const currentReplaces = Array.from(replaces);
  const [leading, ...parts] = template.split('%');
  const result = parts.reduce(
    (acc, part) => {
      const tokenName = part[0];
      const format = hasOwn(tokenFormatters, tokenName) ? tokenFormatters[tokenName] : null;
      acc.push(format ? format(currentReplaces.shift()) : '%');
      acc.push(format ? part.slice(tokenName.length) : part);
      return acc;
    },
    [leading]
  );
  return result.join('');
}
const tokenFormatters = {
  s: value => String(value),
  d: value => Math.floor(Number(value)),
  i: value => Number.parseInt(String(value), 10),
  f: value => Number.parseFloat(String(value)),
  o: serializeJSON,
  O: serializeJSON,
  j: serializeJSON
};

export { printf, serializeJSON };
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