TypeScript/scripts/eslint/rules/no-type-assertion-whitespace.ts

44 lines
1.4 KiB
TypeScript

import { TSESTree } from "@typescript-eslint/experimental-utils";
import { createRule } from "./utils";
export = createRule({
name: "no-type-assertion-whitespace",
meta: {
docs: {
description: ``,
category: "Stylistic Issues",
recommended: "error",
},
messages: {
noTypeAssertionWhitespace: `Excess trailing whitespace found around type assertion`,
},
schema: [],
type: "problem",
},
defaultOptions: [],
create(context) {
const sourceCode = context.getSourceCode();
const checkTypeAssertionWhitespace = (node: TSESTree.TSTypeAssertion) => {
const leftToken = sourceCode.getLastToken(node.typeAnnotation);
const rightToken = sourceCode.getFirstToken(node.expression);
if (!leftToken || !rightToken) {
return;
}
if (sourceCode.isSpaceBetweenTokens(leftToken, rightToken)) {
context.report({
messageId: "noTypeAssertionWhitespace",
node,
loc: { column: leftToken.loc.end.column + 1, line: leftToken.loc.end.line },
});
}
};
return {
TSTypeAssertion: checkTypeAssertionWhitespace,
};
},
});