Heroku rejected, failed to compile nodejs. React, nodejs, express framework - node.js

Question

I'm trying to push my nodejs, express (backend) and react (font end) with
git push heroku master.
But have rejected:
-----> Node.js app detected
-----> Creating runtime environment
NPM_CONFIG_LOGLEVEL=error
NODE_ENV=production
NODE_MODULES_CACHE=true
NODE_VERBOSE=false
-----> Installing binaries
engines.node (package.json): 10.15.1
engines.npm (package.json): 6.4.1
Resolving node version 10.15.1...
Downloading and installing node 10.15.1...
npm 6.4.1 already installed with node
-----> Restoring cache
- node_modules
-----> Building dependencies
Installing node modules (package.json)
removed 231 packages and audited 201 packages in 3.657s
found 0 vulnerabilities
Running heroku-postbuild
> twituet#1.0.0 heroku-postbuild /tmp/build_fcf0465a8c2c68ad9a71497722565a7a
> cd client && npm && npm run build
Usage: npm <command>
where <command> is one of:
access, adduser, audit, bin, bugs, c, cache, ci, cit,
completion, config, create, ddp, dedupe, deprecate,
dist-tag, docs, doctor, edit, explore, get, help,
help-search, hook, i, init, install, install-test, it, link,
list, ln, login, logout, ls, outdated, owner, pack, ping,
prefix, profile, prune, publish, rb, rebuild, repo, restart,
root, run, run-script, s, se, search, set, shrinkwrap, star,
stars, start, stop, t, team, test, token, tst, un,
uninstall, unpublish, unstar, up, update, v, version, view,
whoami
npm <command> -h quick help on <command>
npm -l display full usage info
npm help <term> search for help on <term>
npm help npm involved overview
Specify configs in the ini-formatted file:
/app/.npmrc
or on the command line via: npm <command> --key value
Config info can be viewed via: npm help config
npm#6.4.1 /tmp/build_fcf0465a8c2c68ad9a71497722565a7a/.heroku/node/lib/node_modules/npm
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! twituet#1.0.0 heroku-postbuild: `cd client && npm && npm run build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the twituet#1.0.0 heroku-postbuild 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! /tmp/npmcache.x0XkK/_logs/2019-02-24T14_05_47_120Z-debug.log
-----> Build failed
We're sorry this build is failing! You can troubleshoot common issues here:
https://devcenter.heroku.com/articles/troubleshooting-node-deploys
If you're stuck, please submit a ticket so we can help:
https://help.heroku.com/
Love,
Heroku
! Push rejected, failed to compile Node.js app.
! Push failed
Here is my package.json
{
"name": "twituet",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "node index.js",
"heroku-postbuild": "cd client && npm && npm run build"
},
"keywords": [],
"author": "vuong xuan",
"license": "ISC",
"dependencies": {
"body-parser": "^1.18.3",
"cors": "^2.8.5",
"express": "^4.16.4",
"mongoose": "^5.4.14",
"morgan": "^1.9.1"
},
"engines": {
"node": "10.15.1",
"npm": "6.4.1"
}
}
What i'm doing wrong. Pls help me...
I tried this solution but it didnt work
Push rejected, failed to compile Node.js app heroku

Answer 1

Since you are executing npm command without passing any argument that is why is failing.
Look at this line "heroku-postbuild": "cd client && npm && npm run build"
And change it to "heroku-postbuild": "cd client && npm install && npm run build"
npm <command> is the correct format of npm commands.
For more details, you can refer the npm doc - https://docs.npmjs.com/cli/npm

Answer 2

Use "heroku-postbuild": "echo Skip builds on Heroku"
This fixed my problem!