diff options
author | Florian Dold <florian.dold@gmail.com> | 2019-03-27 21:01:33 +0100 |
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committer | Florian Dold <florian.dold@gmail.com> | 2019-03-27 21:01:33 +0100 |
commit | cc97a4dd2a967e1c2273bd5f4c5f49a5bf2e2585 (patch) | |
tree | 92c5d88706a6ffc654d1b133618d357890e7096b /node_modules/tslint/lib/rules/noUnusedExpressionRule.js | |
parent | 3771b4d6b67b34c130f3a9a1a15f42deefdb2eda (diff) |
remove node_modules
Diffstat (limited to 'node_modules/tslint/lib/rules/noUnusedExpressionRule.js')
-rw-r--r-- | node_modules/tslint/lib/rules/noUnusedExpressionRule.js | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/node_modules/tslint/lib/rules/noUnusedExpressionRule.js b/node_modules/tslint/lib/rules/noUnusedExpressionRule.js deleted file mode 100644 index 6e3794a53..000000000 --- a/node_modules/tslint/lib/rules/noUnusedExpressionRule.js +++ /dev/null @@ -1,214 +0,0 @@ -"use strict"; -/** - * @license - * Copyright 2014 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 ALLOW_FAST_NULL_CHECKS = "allow-fast-null-checks"; -var ALLOW_NEW = "allow-new"; -var ALLOW_TAGGED_TEMPLATE = "allow-tagged-template"; -var Rule = /** @class */ (function (_super) { - tslib_1.__extends(Rule, _super); - function Rule() { - return _super !== null && _super.apply(this, arguments) || this; - } - Rule.prototype.apply = function (sourceFile) { - return this.applyWithFunction(sourceFile, walk, { - allowFastNullChecks: this.ruleArguments.indexOf(ALLOW_FAST_NULL_CHECKS) !== -1, - allowNew: this.ruleArguments.indexOf(ALLOW_NEW) !== -1, - allowTaggedTemplate: this.ruleArguments.indexOf(ALLOW_TAGGED_TEMPLATE) !== -1, - }); - }; - /* tslint:disable:object-literal-sort-keys */ - Rule.metadata = { - ruleName: "no-unused-expression", - description: "Disallows unused expression statements.", - descriptionDetails: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n Unused expressions are expression statements which are not assignments or function calls\n (and thus usually no-ops)."], ["\n Unused expressions are expression statements which are not assignments or function calls\n (and thus usually no-ops)."]))), - rationale: Lint.Utils.dedent(templateObject_2 || (templateObject_2 = tslib_1.__makeTemplateObject(["\n Detects potential errors where an assignment or function call was intended."], ["\n Detects potential errors where an assignment or function call was intended."]))), - optionsDescription: Lint.Utils.dedent(templateObject_3 || (templateObject_3 = tslib_1.__makeTemplateObject(["\n Two arguments may be optionally provided:\n\n * `", "` allows to use logical operators to perform fast null checks and perform\n method or function calls for side effects (e.g. `e && e.preventDefault()`).\n * `", "` allows 'new' expressions for side effects (e.g. `new ModifyGlobalState();`.\n * `", "` allows tagged templates for side effects (e.g. `this.add\\`foo\\`;`."], ["\n Two arguments may be optionally provided:\n\n * \\`", "\\` allows to use logical operators to perform fast null checks and perform\n method or function calls for side effects (e.g. \\`e && e.preventDefault()\\`).\n * \\`", "\\` allows 'new' expressions for side effects (e.g. \\`new ModifyGlobalState();\\`.\n * \\`", "\\` allows tagged templates for side effects (e.g. \\`this.add\\\\\\`foo\\\\\\`;\\`."])), ALLOW_FAST_NULL_CHECKS, ALLOW_NEW, ALLOW_TAGGED_TEMPLATE), - options: { - type: "array", - items: { - type: "string", - enum: [ALLOW_FAST_NULL_CHECKS, ALLOW_NEW, ALLOW_TAGGED_TEMPLATE], - }, - minLength: 0, - maxLength: 3, - }, - optionExamples: [true, [true, ALLOW_FAST_NULL_CHECKS]], - type: "functionality", - typescriptOnly: false, - }; - /* tslint:enable:object-literal-sort-keys */ - Rule.FAILURE_STRING = "unused expression, expected an assignment or function call"; - return Rule; -}(Lint.Rules.AbstractRule)); -exports.Rule = Rule; -function walk(ctx) { - var checking = false; - var allowFastNullChecks = true; - return ts.forEachChild(ctx.sourceFile, cb); - function cb(node) { - if (checking) { - if (tsutils_1.isParenthesizedExpression(node) || tsutils_1.isVoidExpression(node)) { - return cb(node.expression); - } - else if (tsutils_1.isConditionalExpression(node)) { - noCheck(node.condition, cb); - return both(node.whenTrue, node.whenFalse); - } - else if (tsutils_1.isBinaryExpression(node)) { - switch (node.operatorToken.kind) { - case ts.SyntaxKind.CommaToken: - if (isIndirectEval(node)) { - return false; - } - return both(node.left, node.right); - case ts.SyntaxKind.AmpersandAmpersandToken: - case ts.SyntaxKind.BarBarToken: - if (allowFastNullChecks) { - noCheck(node.left, cb); - return cb(node.right); - } - } - } - noCheck(node, forEachChild); - return isUnusedExpression(node, ctx.options); - } - if (tsutils_1.isExpressionStatement(node)) { - allowFastNullChecks = ctx.options.allowFastNullChecks; - if (!isDirective(node)) { - check(node.expression, node); - } - allowFastNullChecks = true; - return false; - } - else if (tsutils_1.isVoidExpression(node)) { - // allow `void 0` and `void(0)` - if (!isLiteralZero(tsutils_1.isParenthesizedExpression(node.expression) ? node.expression.expression : node.expression)) { - check(node.expression); - } - return false; - } - else if (tsutils_1.isBinaryExpression(node) && node.operatorToken.kind === ts.SyntaxKind.CommaToken && !isIndirectEval(node)) { - check(node.left); - return cb(node.right); - } - return ts.forEachChild(node, cb); - } - function forEachChild(node) { - return ts.forEachChild(node, cb); - } - function check(node, failNode) { - checking = true; - if (cb(node)) { - ctx.addFailureAtNode(failNode === undefined ? node : failNode, Rule.FAILURE_STRING); - } - checking = false; - } - function noCheck(node, callback) { - var old = allowFastNullChecks; - checking = false; - allowFastNullChecks = true; - callback(node); - allowFastNullChecks = old; - checking = true; - } - function both(one, two) { - if (cb(one)) { - if (cb(two)) { - return true; - } - else { - ctx.addFailureAtNode(one, Rule.FAILURE_STRING); - } - } - else if (cb(two)) { - ctx.addFailureAtNode(two, Rule.FAILURE_STRING); - } - return false; - } -} -function isUnusedExpression(node, options) { - switch (node.kind) { - case ts.SyntaxKind.CallExpression: - case ts.SyntaxKind.YieldExpression: - case ts.SyntaxKind.DeleteExpression: - case ts.SyntaxKind.AwaitExpression: - case ts.SyntaxKind.PostfixUnaryExpression: - return false; - case ts.SyntaxKind.NewExpression: - return !options.allowNew; - case ts.SyntaxKind.TaggedTemplateExpression: - return !options.allowTaggedTemplate; - case ts.SyntaxKind.BinaryExpression: - return !tsutils_1.isAssignmentKind(node.operatorToken.kind); - case ts.SyntaxKind.PrefixUnaryExpression: - return node.operator !== ts.SyntaxKind.PlusPlusToken && - node.operator !== ts.SyntaxKind.MinusMinusToken; - default: - return true; - } -} -function isLiteralZero(node) { - return tsutils_1.isNumericLiteral(node) && node.text === "0"; -} -function isIndirectEval(node) { - return tsutils_1.isIdentifier(node.right) && node.right.text === "eval" && - isLiteralZero(node.left) && - node.parent.kind === ts.SyntaxKind.ParenthesizedExpression && - node.parent.parent.kind === ts.SyntaxKind.CallExpression; -} -function isDirective(node) { - if (node.expression.kind !== ts.SyntaxKind.StringLiteral || !canContainDirective(node.parent)) { - return false; - } - var parent = node.parent; - // check if all previous statements in block are also directives - for (var i = parent.statements.indexOf(node) - 1; i >= 0; --i) { - var statement = parent.statements[i]; - if (!tsutils_1.isExpressionStatement(statement) || statement.expression.kind !== ts.SyntaxKind.StringLiteral) { - return false; - } - } - return true; -} -function canContainDirective(node) { - switch (node.kind) { - case ts.SyntaxKind.SourceFile: - case ts.SyntaxKind.ModuleBlock: - return true; - case ts.SyntaxKind.Block: - switch (node.parent.kind) { - case ts.SyntaxKind.ArrowFunction: - case ts.SyntaxKind.FunctionExpression: - case ts.SyntaxKind.FunctionDeclaration: - case ts.SyntaxKind.MethodDeclaration: - case ts.SyntaxKind.Constructor: - case ts.SyntaxKind.GetAccessor: - case ts.SyntaxKind.SetAccessor: - return true; - default: - return false; - } - default: - return false; - } -} -var templateObject_1, templateObject_2, templateObject_3; |