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no-jest-import.ts
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/
no-jest-import.ts
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import { TSESTree } from '@typescript-eslint/experimental-utils';
import { createRule } from './utils';
export default createRule({
name: __filename,
meta: {
type: 'problem',
docs: {
description: 'Disallow importing Jest',
recommended: 'error',
},
messages: {
unexpectedImport: `Jest is automatically in scope. Do not import "jest", as Jest doesn't export anything.`,
},
schema: [],
},
defaultOptions: [],
create(context) {
return {
'ImportDeclaration[source.value="jest"]'(
node: TSESTree.ImportDeclaration,
) {
context.report({ node, messageId: 'unexpectedImport' });
},
'CallExpression[callee.name="require"][arguments.0.value="jest"]'(
node: TSESTree.CallExpression,
) {
context.report({
loc: node.arguments[0].loc,
messageId: 'unexpectedImport',
node,
});
},
};
},
});