nodejs Heroku build is timing out (it used to work) - node.js

Question

I am trying to deploy a nodejs app I have via
git push heroku master
The build is failing due to timeout and here is the build log
-----> Node.js app detected
-----> Creating runtime environment
NPM_CONFIG_LOGLEVEL=error
NODE_VERBOSE=false
NODE_ENV=production
NODE_MODULES_CACHE=true
-----> Installing binaries
engines.node (package.json): unspecified
engines.npm (package.json): unspecified (use default)
Resolving node version 10.x...
Downloading and installing node 10.15.3...
Using default npm version: 6.4.1
-----> Restoring cache
Cached directories were not restored due to a change in version of node, npm, yarn or stack
Module installation may take longer for this build
-----> Installing dependencies
Installing node modules (package.json + package-lock)
> node-expat#2.3.17 install /tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea/node_modules/node-expat
> node-gyp rebuild
make: Entering directory '/tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea/node_modules/node-expat/build'
CC(target) Release/obj.target/expat/deps/libexpat/lib/xmlparse.o
../deps/libexpat/lib/xmlparse.c: In function ‘gather_time_entropy’:
../deps/libexpat/lib/xmlparse.c:780:7: warning: variable ‘gettimeofday_res’ set but not used [-Wunused-but-set-variable]
int gettimeofday_res;
^
CC(target) Release/obj.target/expat/deps/libexpat/lib/xmltok.o
CC(target) Release/obj.target/expat/deps/libexpat/lib/xmlrole.o
AR(target) Release/obj.target/deps/libexpat/libexpat.a
COPY Release/libexpat.a
CXX(target) Release/obj.target/node_expat/node-expat.o
../node-expat.cc: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE Parser::Parse(Nan::NAN_METHOD_ARGS_TYPE)’:
../node-expat.cc:103:47: warning: ‘v8::Local<v8::Object> v8::Value::ToObject() const’ is deprecated: Use maybe version [-Wdeprecated-declarations]
Local<Object> obj = info[0]->ToObject();
^
In file included from /app/.node-gyp/10.15.3/include/node/node.h:63:0,
from ../node_modules/nan/nan.h:52,
from ../node-expat.cc:1:
/app/.node-gyp/10.15.3/include/node/v8.h:10046:15: note: declared here
Local<Object> Value::ToObject() const {
^
../node-expat.cc: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE Parser::SetUnknownEncoding(Nan::NAN_METHOD_ARGS_TYPE)’:
../node-expat.cc:470:59: warning: ‘int32_t v8::Value::Int32Value() const’ is deprecated: Use maybe version [-Wdeprecated-declarations]
parser->xmlEncodingInfo->map[i] = m->Int32Value();
^
In file included from /app/.node-gyp/10.15.3/include/node/v8.h:26:0,
from /app/.node-gyp/10.15.3/include/node/node.h:63,
from ../node_modules/nan/nan.h:52,
from ../node-expat.cc:1:
/app/.node-gyp/10.15.3/include/node/v8.h:2478:46: note: declared here
V8_DEPRECATED("Use maybe version", int32_t Int32Value() const);
^
/app/.node-gyp/10.15.3/include/node/v8config.h:324:3: note: in definition of macro ‘V8_DEPRECATED’
declarator __attribute__((deprecated(message)))
^
SOLINK_MODULE(target) Release/obj.target/node_expat.node
COPY Release/node_expat.node
make: Leaving directory '/tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea/node_modules/node-expat/build'
> iconv#2.3.1 install /tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea/node_modules/iconv
> node-gyp rebuild
make: Entering directory '/tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea/node_modules/iconv/build'
CXX(target) Release/obj.target/iconv/src/binding.o
CC(target) Release/obj.target/iconv/deps/libiconv/lib/iconv.o
CC(target) Release/obj.target/iconv/support/localcharset.o
SOLINK_MODULE(target) Release/obj.target/iconv.node
COPY Release/iconv.node
make: Leaving directory '/tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea/node_modules/iconv/build'
> execSync#1.0.2 install /tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea/node_modules/execSync
> node install.js
[execsync v1.0.2] Attempting to compile native extensions.
[execSync v1.0.2]
Native code compile failed!!
added 760 packages from 579 contributors and audited 3610 packages in 38.646s
found 111 vulnerabilities (46 low, 49 moderate, 16 high)
run `npm audit fix` to fix them, or `npm audit` for details
-----> Build
Running build
> udemy-nodejs-angular2#1.0.0 build /tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea
> del-cli public/js/app && webpack --config webpack.config.dev.js --progress --profile --watch
0% compiling
Webpack is watching the files…
10% building modules 0/1 modules 1 active ...dc95dbb7c74ca4abea/assets/app/main.ts
[at-loader] Using typescript#2.6.2 from typescript and "tsconfig.json" from /tmp/build_c3cb8f26de145fdc95dbb7c74ca4abea/tsconfig.json.
18812ms building modules
77ms sealing
0ms optimizing
0ms basic module optimization
66ms module optimization
27ms advanced module optimization
0ms basic chunk optimization
0ms chunk optimization
0ms advanced chunk optimization
1ms module and chunk tree optimization
48ms module reviving
6ms module order optimization
9ms module id optimization
10ms chunk reviving
1ms chunk order optimization
45ms chunk id optimization
116ms hashing
1ms module assets processing
1746ms chunk assets processing
6ms additional chunk assets processing
0ms recording
0ms additional asset processing
1ms chunk asset optimization
494ms asset optimization
206ms emitting
Hash: bdcd2d9b22529d57e9ea
Version: webpack 2.7.0
Time: 21715ms
Asset Size Chunks Chunk Names
0.chunk.js 672 kB 0 [emitted] [big]
1.chunk.js 45.2 kB 1 [emitted]
bundle.js 29.8 MB 2 [emitted] [big] app
[0] ./~/#angular/core/esm5/core.js 542 kB {2} [built]
[] -> factory:568ms building:8004ms dependencies:14ms = 8586ms
[4] ./~/tslib/tslib.es6.js 8.03 kB {2} [built]
[] -> factory:1256ms building:1025ms = 2281ms
[46] ./~/#angular/platform-browser/esm5/platform-browser.js 159 kB {2} [built]
[] -> factory:570ms building:4258ms dependencies:5ms = 4833ms
[785] ./~/#angular/platform-browser-dynamic/esm5/platform-browser-dynamic.js 24.9 kB {2} [built]
[] -> factory:96ms building:89ms dependencies:464ms = 649ms
[786] ./assets/app/app.module.ts 4.19 kB {2} [built]
[] -> factory:11ms building:71ms = 82ms
[787] ./assets/app/polyfills.ts 163 bytes {2} [built]
[] -> factory:9ms building:9ms = 18ms
[788] ./~/hammerjs/hammer.js 73.8 kB {2} [built]
[] -> factory:95ms building:643ms = 738ms
[820] ./~/#angular/platform-browser/esm5/animations.js 28 kB {2} [built]
[] -> factory:571ms building:292ms dependencies:499ms = 1362ms
[821] ./assets/app/app.component.ts 1.58 kB {2} [built]
[] -> factory:27ms building:112ms dependencies:431ms = 570ms
[822] ./assets/app/app.routing.ts 3.79 kB {2} [built]
[] -> factory:28ms building:176ms dependencies:12ms = 216ms
[823] ./assets/app/errors/error.component.ts 2.12 kB {2} [built]
[] -> factory:32ms building:343ms dependencies:195ms = 570ms
[825] ./assets/app/header.component.ts 1.53 kB {2} [built]
[] -> factory:28ms building:129ms dependencies:413ms = 570ms
[826] ./assets/app/main.ts 338 bytes {2} [built]
factory:30ms building:7552ms = 7582ms
[830] ./assets/app/messages/message.module.ts 1.78 kB {2} [built]
[] -> factory:34ms building:372ms dependencies:1123ms = 1529ms
[832] ./assets/app/setup/job.module.ts 4.54 kB {2} [built]
[] -> factory:36ms building:471ms dependencies:1277ms = 1784ms
+ 1707 hidden modules
-----> Timed out running buildpack Node.js
! Timed out compiling app (60 minutes)
! See https://devcenter.heroku.com/articles/slug-compiler#time-limit
I see that there is a statement that says Module installation may take longer for this build but unfortunately it is timing out. The frustrating part here is that it used to work and I'm not sure why it isn't now. Is there any way to increase the timeout limit or solve this issue in another way?

Answer 1

This is probably due to the webpack build taking time due to high memory usage. You can try to tweak the memory allowed for the node process by passing NODE_OPTIONS="--max_old_space_size=2560". The default size is 2.5GB and you can try increasing it to a suitable value. Might help!