Installing dependencies.

node_modules/eslint-plugin-jest/lib/rules/prefer-to-contain.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _utils = require("@typescript-eslint/utils");
+
+var _utils2 = require("./utils");
+
+/**
+ * Checks if the given `node` is a `CallExpression` representing the calling
+ * of an `includes`-like method that can be 'fixed' (using `toContain`).
+ *
+ * @param {CallExpression} node
+ *
+ * @return {node is FixableIncludesCallExpression}
+ */
+const isFixableIncludesCallExpression = node => node.type === _utils.AST_NODE_TYPES.CallExpression && node.callee.type === _utils.AST_NODE_TYPES.MemberExpression && (0, _utils2.isSupportedAccessor)(node.callee.property, 'includes') && (0, _utils2.hasOnlyOneArgument)(node) && node.arguments[0].type !== _utils.AST_NODE_TYPES.SpreadElement; // expect(array.includes(<value>)[not.]{toBe,toEqual}(<boolean>)
+
+
+var _default = (0, _utils2.createRule)({
+  name: __filename,
+  meta: {
+    docs: {
+      category: 'Best Practices',
+      description: 'Suggest using `toContain()`',
+      recommended: false
+    },
+    messages: {
+      useToContain: 'Use toContain() instead'
+    },
+    fixable: 'code',
+    type: 'suggestion',
+    schema: []
+  },
+  defaultOptions: [],
+
+  create(context) {
+    return {
+      CallExpression(node) {
+        const jestFnCall = (0, _utils2.parseJestFnCall)(node, context);
+
+        if ((jestFnCall === null || jestFnCall === void 0 ? void 0 : jestFnCall.type) !== 'expect' || jestFnCall.args.length === 0) {
+          return;
+        }
+
+        const {
+          parent: expect
+        } = jestFnCall.head.node;
+
+        if ((expect === null || expect === void 0 ? void 0 : expect.type) !== _utils.AST_NODE_TYPES.CallExpression) {
+          return;
+        }
+
+        const {
+          arguments: [includesCall],
+          range: [, expectCallEnd]
+        } = expect;
+        const {
+          matcher
+        } = jestFnCall;
+        const matcherArg = (0, _utils2.getFirstMatcherArg)(jestFnCall);
+
+        if (!includesCall || matcherArg.type === _utils.AST_NODE_TYPES.SpreadElement || !_utils2.EqualityMatcher.hasOwnProperty((0, _utils2.getAccessorValue)(matcher)) || !(0, _utils2.isBooleanLiteral)(matcherArg) || !isFixableIncludesCallExpression(includesCall)) {
+          return;
+        }
+
+        const hasNot = jestFnCall.modifiers.some(nod => (0, _utils2.getAccessorValue)(nod) === 'not');
+        context.report({
+          fix(fixer) {
+            const sourceCode = context.getSourceCode(); // we need to negate the expectation if the current expected
+            // value is itself negated by the "not" modifier
+
+            const addNotModifier = matcherArg.value === hasNot;
+            return [// remove the "includes" call entirely
+            fixer.removeRange([includesCall.callee.property.range[0] - 1, includesCall.range[1]]), // replace the current matcher with "toContain", adding "not" if needed
+            fixer.replaceTextRange([expectCallEnd, matcher.parent.range[1]], addNotModifier ? `.${_utils2.ModifierName.not}.toContain` : '.toContain'), // replace the matcher argument with the value from the "includes"
+            fixer.replaceText(jestFnCall.args[0], sourceCode.getText(includesCall.arguments[0]))];
+          },
+
+          messageId: 'useToContain',
+          node: matcher
+        });
+      }
+
+    };
+  }
+
+});
+
+exports.default = _default;