nganalyzer is a tool for analyzing Angular apps.
npm install --save-dev nganalyzeryarn add --dev nganalyzer
nganalyzer --help: display help infonganalyzer --version: display the installed versionnganalyzer [--project ./tsconfig.json]: lint a project and report failures
Add an nganalyzer.json file at the root of your project to configure which rules to run.
{
"rules": {
"no-unused-component": true,
"no-unused-component-binding": true
}
}no-usused-component: reports when a component is not usedno-unused-component-bindings: reports when a component input or output is not used
These rules could be implemented as tslint rules. In fact, I originally did implement them as
tslint rules. However, since these rules require the entire application structure to be read,
applying these rules via tslint does not work as well. The tslint-language-service, for
example, seemed to slow down the editor when applying the rules. Also, you don't get much benefit
from continuously applying these kinds of rules in the editor. Therefore, I thought it would be
best to ship these rules in a separate tool that can be run once when building a project.