## Description After about an hour or so of development after executing `ava --watch`, the program hangs for a few seconds, followed by the given error message & stack trace. I just have to restart the watch process and I can go on my merry way for the next hour or so, until it crashes again. Note that the program is computing through nearly 2 megabytes of example data in order to test. It's not a huge deal, just takes a minute or two out of my work flow. ### Test Source ```js /* see src\reportcard\reportcard.test.js in https://github.com/Kaelinator/skyward-rest */ ``` ### Error Message & Stack Trace ``` ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────── 4 tests passed [13:54:05] r <--- Last few GCs ---> [1288:0000014D5E010E40] 5248708 ms: Mark-sweep 1399.2 (1447.6) -> 1399.2 (1447.6) MB, 591.5 / 3.8 ms allocation failure GC in old space requested [1288:0000014D5E010E40] 5249290 ms: Mark-sweep 1399.2 (1447.6) -> 1399.2 (1431.6) MB, 581.7 / 3.9 ms last resort GC in old space requested [1288:0000014D5E010E40] 5249869 ms: Mark-sweep 1399.2 (1431.6) -> 1399.2 (1431.6) MB, 579.0 / 3.9 ms last resort GC in old space requested <--- JS stacktrace ---> ==== JS stack trace ========================================= 0: ExitFrame [pc: 000000B06B184281] Security context: 00000129608206A9 1: /* anonymous */(aka /* anonymous */) [D:\Code\Projects\Personal\skyward-rest\node_modules\readdirp\readdirp.js:~159] [pc=000000B06CA31FF5](this=00000143D3C022E1 ,err=00000143D3C02201 ,realCurrentDir=0000003A47A23609 ) 2: LOOP(aka LOOP) [fs.js:~1809] [pc=000000B06... FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory 1: node::DecodeWrite 2: node_module_register 3: v8::internal::FatalProcessOutOfMemory 4: v8::internal::FatalProcessOutOfMemory 5: v8::internal::Heap::MaxHeapGrowingFactor 6: v8::internal::Factory::NewJSPromise 7: v8::internal::interpreter::operator<< 8: v8::internal::NativesCollection<0>::GetScriptsSource 9: v8::internal::NativesCollection<0>::GetScriptsSource 10: v8::internal::NativesCollection<0>::GetScriptsSource 11: v8::internal::NativesCollection<0>::GetScriptsSource 12: 000000B06B184281 npm ERR! code ELIFECYCLE npm ERR! errno 134 npm ERR! skyward-rest@1.0.0 watch: `npx ava --watch` npm ERR! Exit status 134 npm ERR! npm ERR! Failed at the skyward-rest@1.0.0 watch script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\Owner\AppData\Roaming\npm-cache\_logs\2019-03-14T18_55_27_647Z-debug.log ``` ### Config ```json { "ava": {} } ``` ### Command-Line Arguments ``` ava --watch ``` ## Relevant Links The project I was testing in: [skyward-rest](https://github.com/Kaelinator/skyward-rest) #1350 and #1056 seem to have relevant issues ## Environment ``` Node.js v10.1.0 win32 10.0.17134 ava --version 1.3.1 npm --version 6.8.0 ```

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watch error: JavaScript heap out of memory #2068

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