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- 'use strict';
- const MESSAGE_ID = 'no-empty-file';
- const messages = {
- [MESSAGE_ID]: 'Empty files are not allowed.',
- };
- const isEmpty = node =>
- (
- (node.type === 'Program' || node.type === 'BlockStatement')
- && node.body.every(currentNode => isEmpty(currentNode))
- )
- || node.type === 'EmptyStatement'
- || (node.type === 'ExpressionStatement' && 'directive' in node);
- const isTripleSlashDirective = node =>
- node.type === 'Line' && node.value.startsWith('/');
- const hasTripeSlashDirectives = comments =>
- comments.some(currentNode => isTripleSlashDirective(currentNode));
- /** @param {import('eslint').Rule.RuleContext} context */
- const create = context => {
- const filename = context.getPhysicalFilename().toLowerCase();
- if (!/\.(?:js|mjs|cjs|ts|mts|cts)$/.test(filename)) {
- return {};
- }
- return {
- Program(node) {
- if (!isEmpty(node)) {
- return;
- }
- const sourceCode = context.getSourceCode();
- const comments = sourceCode.getAllComments();
- if (hasTripeSlashDirectives(comments)) {
- return;
- }
- return {
- node,
- messageId: MESSAGE_ID,
- };
- },
- };
- };
- /** @type {import('eslint').Rule.RuleModule} */
- module.exports = {
- create,
- meta: {
- type: 'suggestion',
- docs: {
- description: 'Disallow empty files.',
- },
- schema: [],
- messages,
- },
- };
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