eslint-plugin-jest/lib/rules/no-unneeded-async-expect-function.js

ESLint rules for Jest

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _utils = require("@typescript-eslint/utils");
var _utils2 = require("./utils");
var _default = exports.default = (0, _utils2.createRule)({
  name: __filename,
  meta: {
    docs: {
      description: 'Disallow unnecessary async function wrapper for expected promises'
    },
    fixable: 'code',
    messages: {
      noAsyncWrapperForExpectedPromise: 'Unnecessary async function wrapper'
    },
    schema: [],
    type: 'suggestion'
  },
  defaultOptions: [],
  create(context) {
    return {
      CallExpression(node) {
        const jestFnCall = (0, _utils2.parseJestFnCall)(node, context);
        if (jestFnCall?.type !== 'expect') {
          return;
        }
        const {
          parent
        } = jestFnCall.head.node;
        if (parent.type !== _utils.AST_NODE_TYPES.CallExpression) {
          return;
        }
        const [awaitNode] = parent.arguments;
        if (!awaitNode || !(0, _utils2.isFunction)(awaitNode) || !awaitNode.async || awaitNode.body.type !== _utils.AST_NODE_TYPES.BlockStatement || awaitNode.body.body.length !== 1) {
          return;
        }
        const [callback] = awaitNode.body.body;
        if (callback.type === _utils.AST_NODE_TYPES.ExpressionStatement && callback.expression.type === _utils.AST_NODE_TYPES.AwaitExpression && callback.expression.argument.type === _utils.AST_NODE_TYPES.CallExpression) {
          const innerAsyncFuncCall = callback.expression.argument;
          context.report({
            node: awaitNode,
            messageId: 'noAsyncWrapperForExpectedPromise',
            fix(fixer) {
              const {
                sourceCode
              } = context;
              return [fixer.replaceTextRange([awaitNode.range[0], awaitNode.range[1]], sourceCode.getText(innerAsyncFuncCall))];
            }
          });
        }
      }
    };
  }
});