angular-cli: ng-serve is not working - Could not find module "@angular-devkit/build-angular"
Versions
ng : 6.0.0 node : v8.9.0 npm : 6.0.0 Operating System : macOS
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I have created new project with angular-cli. ng new testapp cd testapp npm install ng serve
ng serve is not working. I found following error
Could not find module "@angular-devkit/build-angular" from "/Users/dic/workspace/projects/carpool".
Error: Could not find module "@angular-devkit/build-angular" from "/Users/dic/workspace/projects/carpool".
at Object.resolve (/usr/local/lib/node_modules/@angular/cli/node_modules/@angular-devkit/core/node/resolve.js:141:11)
at Observable.rxjs_1.Observable [as _subscribe] (/usr/local/lib/node_modules/@angular/cli/node_modules/@angular-devkit/architect/src/architect.js:132:40)
at Observable.subscribe (/usr/local/lib/node_modules/@angular/cli/node_modules/rxjs/internal/Observable.js:162:69)
at DoOperator.call (/usr/local/lib/node_modules/@angular/cli/node_modules/rxjs/internal/operators/tap.js:71:23)
at Observable.subscribe (/usr/local/lib/node_modules/@angular/cli/node_modules/rxjs/internal/Observable.js:159:22)
at /usr/local/lib/node_modules/@angular/cli/node_modules/rxjs/internal/util/subscribeTo.js:22:31
at Object.subscribeToResult (/usr/local/lib/node_modules/@angular/cli/node_modules/rxjs/internal/util/subscribeToResult.js:7:45)
at MergeMapSubscriber._innerSub (/usr/local/lib/node_modules/@angular/cli/node_modules/rxjs/internal/operators/mergeMap.js:132:38)
at MergeMapSubscriber._tryNext (/usr/local/lib/node_modules/@angular/cli/node_modules/rxjs/internal/operators/mergeMap.js:129:14)
at MergeMapSubscriber._next (/usr/local/lib/node_modules/@angular/cli/node_modules/rxjs/internal/operators/mergeMap.js:112:18)
dic@dic.local [~/workspace/projects/carpool]$ ng --version
So request you to please help me to resolve that issue
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About this issue
- Original URL
- State: closed
- Created 6 years ago
- Reactions: 28
- Comments: 38
Links to this issue
Commits related to this issue
- Fix 'ng serve', see angular/angular-cli/issues/10661 https://github.com/angular/angular-cli/issues/10661\#issuecomment-392149827 — committed to kanini/ziwi by deleted user 5 years ago
@DineshChopra i’ve finally made this npm install
@angular-devkit/build-angularand it worked. I’m wondering it sould be within the dev deps or not ?I looked inside
node_modulesand apparently only dependencies are installed, not devDependencies. With the new NPM, we need to explicitly get the devDependencies:npm i --only=devI encountered this issue when use
ng updateto upgrade from 5 to 6. After successfully upgraded, the app couldn’t startI remove my repo. Create new project again
ng new testappcd testappnpm installng serveIts working for me know, but don’t know why its not working earlier. Either its a problem of angular-cli or its a problem of my system.
It waste my 3 hours. So please clarify what exactly we have to do when we face that kind of issue.
Please do below steps
Its will be work perfectly.
You can try rm -rf node_modules then reinstall npm i. This works for me.
I got this working by moving a few things around in
package.jsonI moved the following from
devDependenciesintodependencies:My particular issue was builds passing locally on my development machine, but failing in my Jenkins CI pipeline. Using
angular ^6.0.0, codebase generated withangular/cliand I was trying to runng build. Moving those dependencies around seemed to do the trick, but I cannot speak to why those changes fixed the buildFor myself, during an upgrade from an NG5 app, when I hit this issue I essentially deleted my package-json.lock file and removed my node_modules dir and then
npm iagain and it worked. @superstator was right though the issue is in thepackage-lock.jsonfile if you’re upgrading from NG5Was running into this, and it ended up being a mismatch between the version of
rxjsinpackage-lock.jsonand my installed version. Updated all my machines to 6.1 withnpm i -g rxjsand am able to build and run again. Supremely unhelpful error message, though…FWIW, I wasn’t upgrading an old project. I started a brand new project over the weekend on one machine (Win 10) and then checked it out and attempted to run on another (MacOS High Sierra). Both have brand new node installs, and
@angular/cli6.0, I just somehow ended up withrxjs6.0 on one and 6.1 on the other, and the build was apparently flummoxed by the mismatched version.I saw the crash both ways, too - the project was created with a reference to
rxjs6.0, and this crashed when I checked it out on the machine withrxjs6.1. Somehow I managed to thrash around and upgrade the project without realizing it, and it started working on the 6.1 machine. Then I moved back to the original machine with 6.0 and it started crashing again, and I had to go take a break before I threw something out the window. I finally figured it out by nuking the entire project folder on the 6.0 machine, recreating from scratch withng new, verifying that ran OK, and then stepping through the git diff until I narrowed it down to therxjsversion.You can go for “npm install” everytime whenever you git pull some another app to your machine as the pushed code on the github is not having node modules.
On Sat, 9 Feb 2019, 12:55 pm Abdul R Nagori, notifications@github.com wrote:
npm i -D @angular-devkit/core it’s work
craviteja’s answer worked for me
delete node_modules/ and package-lock.json npm install
all better
Thanks npm install @angular-devkit/build-angular but i seem to run into another error
Versions of @angular/compiler-cli and typescript could not be determined. The most common reason for this is a broken npm install.
Please make sure your package.json contains both @angular/compiler-cli and typescript in devDependencies, then delete node_modules and package-lock.json (if you have one) and run npm install again.
Following the instructions in this thread https://github.com/angular/angular-cli/issues/8407
@Angular/cli 6.0.8 version : node -v :8.11.2 npm -v : 6.1.0 I was facing the below issue from 2 days and tried all possible solutions.
Local workspace file (‘angular.json’) could not be found. Error: Local workspace file (‘angular.json’) could not be found.
Solution : First confirm that you are there in a write folder where u have created a new file n downloaded angular.json . Do ng serve If still it doesn’t work Look inside node_modules…You must have only dependencies are installed n v need devDependencies Type npm i --only=dev