eslint-plugin-svelte/lib/rules/no-export-load-in-svelte-module-in-kit-pages.js

ESLint plugin for Svelte using AST

import { createRule } from '../utils/index.js';
export default createRule('no-export-load-in-svelte-module-in-kit-pages', {
    meta: {
        docs: {
            description: 'disallow exporting load functions in `*.svelte` module in SvelteKit page components.',
            category: 'SvelteKit',
            recommended: true
        },
        schema: [],
        messages: {
            unexpected: 'disallow exporting load functions in `*.svelte` module in SvelteKit page components.'
        },
        type: 'problem',
        conditions: [
            {
                svelteKitFileTypes: ['+page.svelte', '+error.svelte', '+layout.svelte']
            }
        ]
    },
    create(context) {
        let isModule = false;
        return {
            // <script context="module">
            [`Program > SvelteScriptElement > SvelteStartTag > SvelteAttribute[key.name="context"] > SvelteLiteral[value="module"]`]: () => {
                isModule = true;
            },
            // </script>
            'Program > SvelteScriptElement:exit': () => {
                isModule = false;
            },
            // export function load() {}
            // export const load = () => {}
            [`:matches(ExportNamedDeclaration > FunctionDeclaration, ExportNamedDeclaration > VariableDeclaration > VariableDeclarator) > Identifier.id[name="load"]`]: (node) => {
                if (!isModule)
                    return {};
                return context.report({
                    node,
                    loc: node.loc,
                    messageId: 'unexpected'
                });
            }
        };
    }
});