27 lines
1.1 KiB
TypeScript
27 lines
1.1 KiB
TypeScript
import * as _ from 'lodash';
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import * as Lint from 'tslint';
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import * as ts from 'typescript';
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export class AsyncSuffixWalker extends Lint.RuleWalker {
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public static FAILURE_STRING = 'async functions must have an Async suffix';
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public visitMethodDeclaration(node: ts.MethodDeclaration): void {
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const methodNameNode = node.name;
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const methodName = methodNameNode.getText();
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if (!_.isUndefined(node.type)) {
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if (node.type.kind === ts.SyntaxKind.TypeReference) {
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// tslint:disable-next-line:no-unnecessary-type-assertion
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const returnTypeName = (node.type as ts.TypeReferenceNode).typeName.getText();
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if (returnTypeName === 'Promise' && !methodName.endsWith('Async')) {
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const failure = this.createFailure(
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methodNameNode.getStart(),
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methodNameNode.getWidth(),
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AsyncSuffixWalker.FAILURE_STRING,
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);
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this.addFailure(failure);
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}
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}
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}
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super.visitMethodDeclaration(node);
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}
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}
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