/
no-export.ts
68 lines (63 loc) · 1.76 KB
/
no-export.ts
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import { AST_NODE_TYPES, TSESTree } from '@typescript-eslint/utils';
import { createRule, isTestCaseCall } from './utils';
export default createRule({
name: __filename,
meta: {
docs: {
category: 'Best Practices',
description: 'Disallow using `exports` in files containing tests',
recommended: 'error',
},
messages: {
unexpectedExport: `Do not export from a test file.`,
},
type: 'suggestion',
schema: [],
},
defaultOptions: [],
create(context) {
const exportNodes: Array<
| TSESTree.ExportNamedDeclaration
| TSESTree.ExportDefaultDeclaration
| TSESTree.MemberExpression
> = [];
let hasTestCase = false;
return {
'Program:exit'() {
if (hasTestCase && exportNodes.length > 0) {
for (const node of exportNodes) {
context.report({ node, messageId: 'unexpectedExport' });
}
}
},
CallExpression(node) {
if (isTestCaseCall(node, context.getScope())) {
hasTestCase = true;
}
},
'ExportNamedDeclaration, ExportDefaultDeclaration'(
node:
| TSESTree.ExportNamedDeclaration
| TSESTree.ExportDefaultDeclaration,
) {
exportNodes.push(node);
},
'AssignmentExpression > MemberExpression'(
node: TSESTree.MemberExpression,
) {
let { object, property } = node;
if (object.type === AST_NODE_TYPES.MemberExpression) {
({ object, property } = object);
}
if (
'name' in object &&
object.name === 'module' &&
property.type === AST_NODE_TYPES.Identifier &&
/^exports?$/u.test(property.name)
) {
exportNodes.push(node);
}
},
};
},
});