JSON parsing error

[ynigoreyes]

Is this a bug report?

Yes

$ node -v
v10.4.1

$ yarn -v
1.7.0

Environment

using react-app-rewired and react-scripts-ts

Steps to Reproduce

Cannot reproduce steps as it seemed to happen randomly

I was restructuring src and had to restart webpackdev server and it broke

Expected Behavior

Recompile without errors

Actual Behavior

MiggyMBA:hackwestx-web-app miggy$ yarn start
yarn run v1.7.0
$ npm-run-all -p watch-css start-js
$ npm run build-css && node-sass-chokidar --include-path ./src --include-path ./node_modules src/ -o src/ --watch --recursive
$ react-app-rewired start --scripts-version react-scripts-ts

hackwestx-web-app@0.1.0 build-css /Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app
node-sass-chokidar --include-path ./src --include-path ./node_modules src/ -o src/

Wrote 5 CSS files to /Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/src/
=> changed: /Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/src/index.scss
=> changed: /Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/src/pages/AppLayout.scss
=> changed: /Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/src/pages/components/ClockComponent/Clock.scss
=> changed: /Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/src/pages/EventsPage/Events.scss
=> changed: /Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/src/pages/HomePage/Home.scss
undefined:22
},
^

SyntaxError: Unexpected token } in JSON at position 490
at JSON.parse ()
at loadTsconfig (/Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/node_modules/tsconfig-paths/lib/tsconfig-loader.js:72:23)
at loadSyncDefault (/Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/node_modules/tsconfig-paths/lib/tsconfig-loader.js:27:18)
at tsConfigLoader (/Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/node_modules/tsconfig-paths/lib/tsconfig-loader.js:13:22)
at configLoader (/Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/node_modules/tsconfig-paths/lib/config-loader.js:27:22)
at Object.loadConfig (/Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/node_modules/tsconfig-paths/lib/config-loader.js:8:12)
at new TsconfigPathsPlugin (/Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/node_modules/tsconfig-paths-webpack-plugin/lib/plugin.js:20:42)
at Object. (/Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/node_modules/react-scripts-ts/config/webpack.config.dev.js:127:7)
at Module._compile (internal/modules/cjs/loader.js:702:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:713:10)
at Module.load (internal/modules/cjs/loader.js:612:32)
at tryModuleLoad (internal/modules/cjs/loader.js:551:12)
at Function.Module._load (internal/modules/cjs/loader.js:543:3)
at Module.require (internal/modules/cjs/loader.js:650:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Object. (/Users/miggy/Dropbox/CodeBase/GitHub - Cloud/hackwestx-web-app/node_modules/react-app-rewired/scripts/start.js:9:23)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
error Command failed with signal "SIGTERM".
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
ERROR: "start-js" exited with 1.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[ynigoreyes]

FIX:

you cannot have trailing commas in tsconfig.json