eslint-plugin-roku/dist/rules/function-no-return.js

The ESLint custom plugin with rules and parser for .brs files

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const RETURN_TOKEN = 'return';
const EMPTY_MESSAGE = 'empty';
const RETURN_MESSAGE = 'return';
const meta = {
    docs: {
        category: 'Stylistic Issues',
        description: 'Check that `Function` with defined return type has RETURN statements',
        recommended: true,
        url: 'https://www.rokuroad.com/docs/rules/sub-to-function'
    },
    fixable: 'code',
    messages: {
        [EMPTY_MESSAGE]: 'Function {{name}} should return ({{type}}) but it is EMPTY',
        [RETURN_MESSAGE]: 'Function {{name}} should return ({{type}}) but it has no RETURN'
    },
    schema: []
};
exports.meta = meta;
const create = (context) => {
    return {
        FunctionDeclaration(node) {
            const { id, ReturnType, body } = node;
            const name = id.name;
            const type = ReturnType && ReturnType.value.toLowerCase();
            let messageId = null;
            if (type && type !== 'void') {
                if (body.loc === null) {
                    messageId = EMPTY_MESSAGE;
                }
                else {
                    const allTokens = context.getSourceCode().getTokens(body);
                    if (allTokens.length === 0) {
                        messageId = EMPTY_MESSAGE;
                    }
                    else {
                        const returnStatement = allTokens.find((token) => token.value.toLowerCase() === RETURN_TOKEN);
                        if (!returnStatement) {
                            messageId = RETURN_MESSAGE;
                        }
                    }
                }
            }
            if (messageId) {
                context.report({
                    data: {
                        name,
                        type
                    },
                    messageId,
                    node
                });
            }
        }
    };
};
exports.create = create;