--- /dev/null
+"use strict";
+/**
+ * @license
+ * Copyright 2015 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 OPTION_IGNORE_PARMS = "ignore-params";
+var OPTION_IGNORE_PROPERTIES = "ignore-properties";
+var Rule = /** @class */ (function (_super) {
+ tslib_1.__extends(Rule, _super);
+ function Rule() {
+ return _super !== null && _super.apply(this, arguments) || this;
+ }
+ /* tslint:enable:object-literal-sort-keys */
+ Rule.FAILURE_STRING_FACTORY = function (type) {
+ return "Type " + type + " trivially inferred from a " + type + " literal, remove type annotation";
+ };
+ Rule.prototype.apply = function (sourceFile) {
+ return this.applyWithWalker(new NoInferrableTypesWalker(sourceFile, this.ruleName, {
+ ignoreParameters: this.ruleArguments.indexOf(OPTION_IGNORE_PARMS) !== -1,
+ ignoreProperties: this.ruleArguments.indexOf(OPTION_IGNORE_PROPERTIES) !== -1,
+ }));
+ };
+ /* tslint:disable:object-literal-sort-keys */
+ Rule.metadata = {
+ ruleName: "no-inferrable-types",
+ description: "Disallows explicit type declarations for variables or parameters initialized to a number, string, or boolean.",
+ rationale: "Explicit types where they can be easily inferred by the compiler make code more verbose.",
+ optionsDescription: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n Two arguments may be optionally provided:\n\n * `", "` allows specifying an inferrable type annotation for function params.\n This can be useful when combining with the `typedef` rule.\n * `", "` allows specifying an inferrable type annotation for class properties."], ["\n Two arguments may be optionally provided:\n\n * \\`", "\\` allows specifying an inferrable type annotation for function params.\n This can be useful when combining with the \\`typedef\\` rule.\n * \\`", "\\` allows specifying an inferrable type annotation for class properties."])), OPTION_IGNORE_PARMS, OPTION_IGNORE_PROPERTIES),
+ options: {
+ type: "array",
+ items: {
+ type: "string",
+ enum: [OPTION_IGNORE_PARMS, OPTION_IGNORE_PROPERTIES],
+ },
+ minLength: 0,
+ maxLength: 2,
+ },
+ hasFix: true,
+ optionExamples: [
+ true,
+ [true, OPTION_IGNORE_PARMS],
+ [true, OPTION_IGNORE_PARMS, OPTION_IGNORE_PROPERTIES],
+ ],
+ type: "typescript",
+ typescriptOnly: true,
+ };
+ return Rule;
+}(Lint.Rules.AbstractRule));
+exports.Rule = Rule;
+var NoInferrableTypesWalker = /** @class */ (function (_super) {
+ tslib_1.__extends(NoInferrableTypesWalker, _super);
+ function NoInferrableTypesWalker() {
+ return _super !== null && _super.apply(this, arguments) || this;
+ }
+ NoInferrableTypesWalker.prototype.walk = function (sourceFile) {
+ var _this = this;
+ var cb = function (node) {
+ if (shouldCheck(node, _this.options)) {
+ var name = node.name, type = node.type, initializer = node.initializer;
+ if (type !== undefined &&
+ initializer !== undefined &&
+ typeIsInferrable(type.kind, initializer)) {
+ var fix = Lint.Replacement.deleteFromTo(name.end, type.end);
+ _this.addFailureAtNode(type, Rule.FAILURE_STRING_FACTORY(ts.tokenToString(type.kind)), fix);
+ }
+ }
+ return ts.forEachChild(node, cb);
+ };
+ return ts.forEachChild(sourceFile, cb);
+ };
+ return NoInferrableTypesWalker;
+}(Lint.AbstractWalker));
+function shouldCheck(node, _a) {
+ var ignoreParameters = _a.ignoreParameters, ignoreProperties = _a.ignoreProperties;
+ switch (node.kind) {
+ case ts.SyntaxKind.Parameter:
+ return (!ignoreParameters &&
+ !tsutils_1.hasModifier(node.modifiers, ts.SyntaxKind.ReadonlyKeyword) &&
+ // "ignore-properties" also works for parameter properties
+ !(ignoreProperties && node.modifiers !== undefined));
+ case ts.SyntaxKind.PropertyDeclaration:
+ return !ignoreProperties && !tsutils_1.hasModifier(node.modifiers, ts.SyntaxKind.ReadonlyKeyword);
+ case ts.SyntaxKind.VariableDeclaration:
+ return true;
+ default:
+ return false;
+ }
+}
+function typeIsInferrable(type, initializer) {
+ switch (type) {
+ case ts.SyntaxKind.BooleanKeyword:
+ return (initializer.kind === ts.SyntaxKind.TrueKeyword ||
+ initializer.kind === ts.SyntaxKind.FalseKeyword);
+ case ts.SyntaxKind.NumberKeyword:
+ return Lint.isNumeric(initializer);
+ case ts.SyntaxKind.StringKeyword:
+ switch (initializer.kind) {
+ case ts.SyntaxKind.StringLiteral:
+ case ts.SyntaxKind.NoSubstitutionTemplateLiteral:
+ case ts.SyntaxKind.TemplateExpression:
+ return true;
+ default:
+ return false;
+ }
+ default:
+ return false;
+ }
+}
+var templateObject_1;