Automattic/mongoose · error · TypeError

Collection name cannot be empty

Error message

Collection name cannot be empty

What it means

Error "Collection name cannot be empty" thrown in Automattic/mongoose.

Source

Thrown at lib/utils.js:59

 * @param {string} name a model name
 * @param {Function} pluralize function that pluralizes the collection name
 * @return {string} a collection name
 * @api private
 */

exports.toCollectionName = function(name, pluralize) {
  if (name === 'system.profile') {
    return name;
  }
  if (name === 'system.indexes') {
    return name;
  }
  if (typeof pluralize === 'function') {
    if (typeof name !== 'string') {
      throw new TypeError('Collection name must be a string');
    }
    if (name.length === 0) {
      throw new TypeError('Collection name cannot be empty');
    }
    return pluralize(name);
  }
  return name;
};

/**
 * Determines if `a` and `b` are deep equal.
 *
 * Modified from node/lib/assert.js
 *
 * @param {any} a a value to compare to `b`
 * @param {any} b a value to compare to `a`
 * @return {boolean}
 * @api private
 */

exports.deepEqual = function deepEqual(a, b) {

View on GitHub (pinned to 49cdab0136)

When it happens

Trigger: Thrown at lib/utils.js:59 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Automattic/mongoose@49cdab0136 (2026-08-21). Data as JSON: /api/errors/4590a7fda8aa0573. Report an issue: GitHub.