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node_modules/tslint/lib/rules/noStringLiteralRule.js

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+"use strict";
+/**
+ * @license
+ * Copyright 2013 Palantir Technologies, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+var tslib_1 = require("tslib");
+var tsutils_1 = require("tsutils");
+var ts = require("typescript");
+var Lint = require("../index");
+var Rule = /** @class */ (function (_super) {
+    tslib_1.__extends(Rule, _super);
+    function Rule() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    Rule.id = function (input) {
+        return input;
+    };
+    Rule.prototype.apply = function (sourceFile) {
+        return this.applyWithFunction(sourceFile, walk);
+    };
+    /* tslint:disable:object-literal-sort-keys */
+    Rule.metadata = {
+        ruleName: "no-string-literal",
+        description: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n            Forbids unnecessary string literal property access.\n            Allows `obj[\"prop-erty\"]` (can't be a regular property access).\n            Disallows `obj[\"property\"]` (should be `obj.property`)."], ["\n            Forbids unnecessary string literal property access.\n            Allows \\`obj[\"prop-erty\"]\\` (can't be a regular property access).\n            Disallows \\`obj[\"property\"]\\` (should be \\`obj.property\\`)."]))),
+        rationale: Lint.Utils.dedent(templateObject_2 || (templateObject_2 = tslib_1.__makeTemplateObject(["\n            If `--noImplicitAny` is turned off,\n            property access via a string literal will be 'any' if the property does not exist."], ["\n            If \\`--noImplicitAny\\` is turned off,\n            property access via a string literal will be 'any' if the property does not exist."]))),
+        optionsDescription: "Not configurable.",
+        options: null,
+        optionExamples: [true],
+        type: "functionality",
+        typescriptOnly: false,
+        hasFix: true,
+    };
+    /* tslint:enable:object-literal-sort-keys */
+    Rule.FAILURE_STRING = "object access via string literals is disallowed";
+    return Rule;
+}(Lint.Rules.AbstractRule));
+exports.Rule = Rule;
+function walk(ctx) {
+    return ts.forEachChild(ctx.sourceFile, function cb(node) {
+        if (tsutils_1.isElementAccessExpression(node)) {
+            var argument = node.argumentExpression;
+            if (argument !== undefined &&
+                tsutils_1.isStringLiteral(argument) &&
+                tsutils_1.isValidPropertyAccess(argument.text)) {
+                var unescapeIdentifier = 
+                // typescript@<2.5.0 has an extra underscore in escaped identifier text content,
+                // to avoid fixing issue `expr['__foo'] → expr.___foo`, unescapeIdentifier() is to be used
+                // As of typescript@3, unescapeIdentifier() removed, thus check in runtime, if the method exists
+                // tslint:disable-next-line no-unsafe-any strict-boolean-expressions
+                ts.unescapeIdentifier || Rule.id;
+                var propertyName = unescapeIdentifier(argument.text);
+                ctx.addFailureAtNode(argument, Rule.FAILURE_STRING, 
+                // expr['foo'] -> expr.foo
+                Lint.Replacement.replaceFromTo(node.expression.end, node.end, "." + propertyName));
+            }
+        }
+        return ts.forEachChild(node, cb);
+    });
+}
+var templateObject_1, templateObject_2;