import { IRuleMetadata, RuleFailure } from 'tslint/lib'; import { AbstractRule } from 'tslint/lib/rules'; import { SourceFile } from 'typescript/lib/typescript'; export declare class Rule extends AbstractRule { static readonly metadata: IRuleMetadata; static readonly FAILURE_STRING = "Missing trackBy function in ngFor directive"; apply(sourceFile: SourceFile): RuleFailure[]; }