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Runtime error
| ; | |
| /** | |
| * Creates an object that precomputes whether a given path has child fields in | |
| * the projection. | |
| * | |
| * #### Example: | |
| * | |
| * const res = hasIncludedChildren({ 'a.b.c': 0 }); | |
| * res.a; // 1 | |
| * res['a.b']; // 1 | |
| * res['a.b.c']; // 1 | |
| * res['a.c']; // undefined | |
| * | |
| * @param {Object} fields | |
| * @api private | |
| */ | |
| module.exports = function hasIncludedChildren(fields) { | |
| const hasIncludedChildren = {}; | |
| const keys = Object.keys(fields); | |
| for (const key of keys) { | |
| if (key.indexOf('.') === -1) { | |
| hasIncludedChildren[key] = 1; | |
| continue; | |
| } | |
| const parts = key.split('.'); | |
| let c = parts[0]; | |
| for (let i = 0; i < parts.length; ++i) { | |
| hasIncludedChildren[c] = 1; | |
| if (i + 1 < parts.length) { | |
| c = c + '.' + parts[i + 1]; | |
| } | |
| } | |
| } | |
| return hasIncludedChildren; | |
| }; | |