| 343 | return Reflect.get(target, prop); |
| 344 | }, |
| 345 | set(target, prop, newValue) { |
| 346 | if (typeof prop === 'symbol') return true; |
| 347 | // TODO: generally we don't expect an "Input" to be undefined because optional properties |
| 348 | // are checked at the top level instead of at the specific attribute |
| 349 | let changeAtThisProp = newValue; |
| 350 | if (newValue instanceof Set) { |
| 351 | let setChanges: Record<string, boolean> = {}; |
| 352 | // if we are overwriting an existing set, we need to clear out the old values |
| 353 | if (target[prop] instanceof Set) { |
| 354 | for (const item of target[prop]) { |
| 355 | setChanges[item] = false; |
| 356 | } |
| 357 | } |
| 358 | for (const item of newValue) { |
| 359 | setChanges[item] = true; |
| 360 | } |
| 361 | changeAtThisProp = setChanges; |
| 362 | } else if (newValue === undefined) { |
| 363 | changeAtThisProp = null; |
| 364 | } else if (newValue instanceof Date) { |
| 365 | changeAtThisProp = newValue.toISOString(); |
| 366 | } else if ( |
| 367 | typeof newValue === 'object' && |
| 368 | newValue !== null && |
| 369 | // replace Arrays wholesale, don't merge |
| 370 | !Array.isArray(newValue) |
| 371 | ) { |
| 372 | if (!changes[prop]) { |
| 373 | changes[prop] = {}; |
| 374 | } |
| 375 | changeAtThisProp = {}; |
| 376 | // if we're doing object reassignment |
| 377 | // merge by setting existing keys to null |
| 378 | if (typeof target[prop] === 'object' && target[prop] !== null) { |
| 379 | for (const key in target[prop]) { |
| 380 | changeAtThisProp[key] = null; |
| 381 | } |
| 382 | } |
| 383 | for (const key in newValue) { |
| 384 | changeAtThisProp[key] = newValue[key]; |
| 385 | } |
| 386 | } |
| 387 | changes[prop] = changeAtThisProp; |
| 388 | |
| 389 | return Reflect.set(target, prop, newValue); |
| 390 | }, |
| 391 | deleteProperty(target, prop) { |
| 392 | if (typeof prop === 'symbol') return true; |
| 393 | changes[prop] = null; |