When I try to build for production my angular application with the following command ng build --prod --build-optimizer I get the following output:
Date: 2019-01-29T08:39:12.193Z
Hash: 05648c76cf91b1245f68
Time: 27920ms
chunk {0} runtime.1eee2a92f0ed121267d0.js (runtime) 2.22 kB [entry] [rendered]
chunk {1} 1.71c6b320e46d84e7f880.js () 88.8 kB [rendered]
chunk {2} main.058aa675d38205a01c2e.js (main) 1.65 MB [initial] [rendered]
chunk {3} polyfills.6226af78bf8dfb509e3e.js (polyfills) 61.7 kB [initial] [rendered]
chunk {4} styles.dec6a5db702d518085c9.css (styles) 61.2 kB [initial] [rendered]
chunk {5} 5.639dab8d0d9c763ecce1.js () 639 kB [rendered]
chunk {6} 6.eeb0ec1b5f6ee2bc4225.js () 130 kB [rendered]
ERROR in 5.639dab8d0d9c763ecce1.js from Terser
--> Unexpected token: punc ()) [5.639dab8d0d9c763ecce1.js:4086,34] <--
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! second-frontend@0.0.0 build_prod: `ng build --prod --build-optimizer`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the second-frontend@0.0.0 build_prod script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
Building for development and serve the application works fine so I suspect it might be related to the uglify process. The angular json configuration for production is as follows:
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"aot": true,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true
},
and the angular version and packages are:
Angular CLI: 7.2.3
Node: 11.1.0
OS: win32 x64
Angular: 7.2.0
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router
Package Version
-----------------------------------------------------------
@angular-devkit/architect 0.12.1
@angular-devkit/build-angular 0.12.1
@angular-devkit/build-optimizer 0.12.1
@angular-devkit/build-webpack 0.12.1
@angular-devkit/core 7.2.1
@angular-devkit/schematics 7.2.3
@angular/cdk 7.2.1
@angular/cli 7.2.3
@angular/flex-layout 7.0.0-beta.23
@angular/material 7.2.1
@ngtools/webpack 7.2.1
@schematics/angular 7.2.3
@schematics/update 0.12.3
rxjs 6.3.3
typescript 3.2.2
webpack 4.23.1
finally, the tsconfig.json file has the following content:
{
"compileOnSave": false,
"compilerOptions": {
"baseUrl": "./",
"paths": {
"@app/*": ["src/app/*"],
"@env/*": ["src/environments/*"]
},
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"target": "es5",
"typeRoots": [
"node_modules/@types"
],
"lib": [
"es2017",
"dom"
]
}
}
If I change angular.json "SourceMap" option from false to true and try to execute the production build it builds without throwing any error:
Date: 2019-01-29T08:47:50.705Z
Hash: 369c42b07abe57a96302
Time: 42331ms
chunk {0} runtime.90bf2a53d53699d5ef63.js, runtime.90bf2a53d53699d5ef63.js.map (runtime) 2.28 kB [entry] [rendered]
chunk {1} 1.9ac663afcd9a15f9ad98.js, 1.9ac663afcd9a15f9ad98.js.map () 88.9 kB [rendered]
chunk {2} main.e3c4184e7cbc49903adc.js, main.e3c4184e7cbc49903adc.js.map (main) 1.65 MB [initial] [rendered]
chunk {3} polyfills.6c3e7ecffd41b4bb0d68.js, polyfills.6c3e7ecffd41b4bb0d68.js.map (polyfills) 61.7 kB [initial] [rendered]
chunk {4} styles.cb7c8ca5b54a30c69879.css, styles.cb7c8ca5b54a30c69879.css.map (styles) 61.2 kB [initial] [rendered]
chunk {5} 5.72034e2cb610bc9b5476.js, 5.72034e2cb610bc9b5476.js.map () 251 kB [rendered]
chunk {6} 6.45111c2fd642148bbdd3.js, 6.45111c2fd642148bbdd3.js.map () 131 kB [rendered]
Process finished with exit code 0
Any suggestion?
EDIT:
running ng build --prod --optimization=false compiles perfectly
As Anton Mitsev stated, the problem was a trailing coma. When removing the trailing the error disappears.
来源：https://stackoverflow.com/questions/54417103/angular-build-for-production-fails