no-empty-function.js
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"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const experimental_utils_1 = require("@typescript-eslint/experimental-utils");
const no_empty_function_1 = __importDefault(require("eslint/lib/rules/no-empty-function"));
const util = __importStar(require("../util"));
const schema = util.deepMerge(Array.isArray(no_empty_function_1.default.meta.schema)
? no_empty_function_1.default.meta.schema[0]
: no_empty_function_1.default.meta.schema, {
properties: {
allow: {
items: {
enum: [
'functions',
'arrowFunctions',
'generatorFunctions',
'methods',
'generatorMethods',
'getters',
'setters',
'constructors',
'private-constructors',
'protected-constructors',
'asyncFunctions',
'asyncMethods',
'decoratedFunctions',
],
},
},
},
});
exports.default = util.createRule({
name: 'no-empty-function',
meta: {
type: 'suggestion',
docs: {
description: 'Disallow empty functions',
category: 'Best Practices',
recommended: 'error',
extendsBaseRule: true,
},
schema: [schema],
messages: no_empty_function_1.default.meta.messages,
},
defaultOptions: [
{
allow: [],
},
],
create(context, [{ allow = [] }]) {
const rules = no_empty_function_1.default.create(context);
const isAllowedProtectedConstructors = allow.includes('protected-constructors');
const isAllowedPrivateConstructors = allow.includes('private-constructors');
const isAllowedDecoratedFunctions = allow.includes('decoratedFunctions');
/**
* Check if the method body is empty
* @param node the node to be validated
* @returns true if the body is empty
* @private
*/
function isBodyEmpty(node) {
return !node.body || node.body.body.length === 0;
}
/**
* Check if method has parameter properties
* @param node the node to be validated
* @returns true if the body has parameter properties
* @private
*/
function hasParameterProperties(node) {
var _a;
return (_a = node.params) === null || _a === void 0 ? void 0 : _a.some(param => param.type === experimental_utils_1.AST_NODE_TYPES.TSParameterProperty);
}
/**
* @param node the node to be validated
* @returns true if the constructor is allowed to be empty
* @private
*/
function isAllowedEmptyConstructor(node) {
const parent = node.parent;
if (isBodyEmpty(node) &&
(parent === null || parent === void 0 ? void 0 : parent.type) === experimental_utils_1.AST_NODE_TYPES.MethodDefinition &&
parent.kind === 'constructor') {
const { accessibility } = parent;
return (
// allow protected constructors
(accessibility === 'protected' && isAllowedProtectedConstructors) ||
// allow private constructors
(accessibility === 'private' && isAllowedPrivateConstructors) ||
// allow constructors which have parameter properties
hasParameterProperties(node));
}
return false;
}
/**
* @param node the node to be validated
* @returns true if a function has decorators
* @private
*/
function isAllowedEmptyDecoratedFunctions(node) {
var _a;
if (isAllowedDecoratedFunctions && isBodyEmpty(node)) {
const decorators = ((_a = node.parent) === null || _a === void 0 ? void 0 : _a.type) === experimental_utils_1.AST_NODE_TYPES.MethodDefinition
? node.parent.decorators
: undefined;
return !!decorators && !!decorators.length;
}
return false;
}
return Object.assign(Object.assign({}, rules), { FunctionExpression(node) {
if (isAllowedEmptyConstructor(node) ||
isAllowedEmptyDecoratedFunctions(node)) {
return;
}
rules.FunctionExpression(node);
},
FunctionDeclaration(node) {
if (isAllowedEmptyDecoratedFunctions(node)) {
return;
}
rules.FunctionDeclaration(node);
} });
},
});
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