I want to use Chart.js within my Angular project. In previous Angular2 versions, I have been doing this well by using a 'chart.loader.ts' which has:
export const { Chart } = require('chart.js');
Then in the component code I just
import { Chart } from './chart.loader';
But after upgrading to cli 1.0.0 and Angular 4, I get the error: "Cannot find name 'require'".
To reproduce the error:
ng new newapp
cd newapp
npm install chart.js --save
echo "export const { Chart } = require('chart.js');" >> src/app/chart.loader.ts
ng serve
In my 'tsconfig.json', I have
"typeRoots": [
"node_modules/@types"
],
And in 'node_modules/@types/node/index.d.ts' there is:
declare var require: NodeRequire;
So I'm confused.
BTW, I constantly encounter the warning:
[tslint] The selector of the component "OverviewComponent" should have prefix "app"(component-selector)
Though I have set the "prefix": "" in my '.angular-cli.json'. Could it because changing from 'angular-cli.json' to '.angular-cli.json' the cause?
The problem (as outlined in typescript getting error TS2304: cannot find name ' require') is that the type definitions for node are not installed.
With a projected genned with @angular/cli 1.x, the specific steps should be:
Step 1:
Install @types/node with either of the following:
- npm install --save @types/node
- yarn add @types/node -D
Step 2: Edit your src/tsconfig.app.json file and add the following in place of the empty "types": [], which should already be there:
...
"types": [ "node" ],
"typeRoots": [ "../node_modules/@types" ]
...
If I've missed anything, jot a comment and I'll edit my answer.
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