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Diffstat (limited to 'node_modules/tslint/lib/rules/preferTemplateRule.js')
-rw-r--r-- | node_modules/tslint/lib/rules/preferTemplateRule.js | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/node_modules/tslint/lib/rules/preferTemplateRule.js b/node_modules/tslint/lib/rules/preferTemplateRule.js deleted file mode 100644 index 6b065d719..000000000 --- a/node_modules/tslint/lib/rules/preferTemplateRule.js +++ /dev/null @@ -1,124 +0,0 @@ -"use strict"; -/** - * @license - * Copyright 2017 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_SINGLE_CONCAT = "allow-single-concat"; -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) { - if (sourceFile.isDeclarationFile) { - return []; // Not possible in a declaration file - } - var allowSingleConcat = this.ruleArguments.indexOf(OPTION_SINGLE_CONCAT) !== -1; - return this.applyWithFunction(sourceFile, walk, { allowSingleConcat: allowSingleConcat }); - }; - /* tslint:disable:object-literal-sort-keys */ - Rule.metadata = { - ruleName: "prefer-template", - description: "Prefer a template expression over string literal concatenation.", - optionsDescription: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n If `", "` is specified, then a single concatenation (`x + y`) is allowed, but not more (`x + y + z`)."], ["\n If \\`", "\\` is specified, then a single concatenation (\\`x + y\\`) is allowed, but not more (\\`x + y + z\\`)."])), OPTION_SINGLE_CONCAT), - options: { - type: "string", - enum: [OPTION_SINGLE_CONCAT], - }, - optionExamples: [true, [true, OPTION_SINGLE_CONCAT]], - type: "style", - typescriptOnly: false, - }; - /* tslint:enable:object-literal-sort-keys */ - Rule.FAILURE_STRING = "Use a template literal instead of concatenating with a string literal."; - Rule.FAILURE_STRING_MULTILINE = "Use a multiline template literal instead of concatenating string literals with newlines."; - return Rule; -}(Lint.Rules.AbstractRule)); -exports.Rule = Rule; -function walk(ctx) { - var allowSingleConcat = ctx.options.allowSingleConcat; - return ts.forEachChild(ctx.sourceFile, function cb(node) { - var failure = getError(node, allowSingleConcat); - if (failure !== undefined) { - ctx.addFailureAtNode(node, failure); - } - else { - return ts.forEachChild(node, cb); - } - }); -} -function getError(node, allowSingleConcat) { - if (!isPlusExpression(node)) { - return undefined; - } - var left = node.left, right = node.right; - var l = isStringLike(left); - var r = isStringLike(right); - if (l && r) { - // They're both strings. - // If they're joined by a newline, recommend a template expression instead. - // Otherwise ignore. ("a" + "b", probably writing a long newline-less string on many lines.) - return containsNewline(left) || containsNewline(right) ? Rule.FAILURE_STRING_MULTILINE : undefined; - } - else if (!l && !r) { - // Watch out for `"a" + b + c`. Parsed as `("a" + b) + c`. - return containsAnyStringLiterals(left) ? Rule.FAILURE_STRING : undefined; - } - else if (l) { - // `"x" + y` - return !allowSingleConcat ? Rule.FAILURE_STRING : undefined; - } - else { - // `? + "b"` - // If LHS consists of only string literals (as in `"a" + "b" + "c"`, allow it.) - return !containsOnlyStringLiterals(left) && (!allowSingleConcat || isPlusExpression(left)) ? Rule.FAILURE_STRING : undefined; - } -} -function containsNewline(node) { - if (node.kind === ts.SyntaxKind.TemplateExpression) { - return node.templateSpans.some(function (_a) { - var text = _a.literal.text; - return text.includes("\n"); - }); - } - else { - return node.text.includes("\n"); - } -} -function containsOnlyStringLiterals(node) { - return isPlusExpression(node) && isStringLike(node.right) && (isStringLike(node.left) || containsAnyStringLiterals(node.left)); -} -function containsAnyStringLiterals(node) { - return isPlusExpression(node) && (isStringLike(node.right) || isStringLike(node.left) || containsAnyStringLiterals(node.left)); -} -function isPlusExpression(node) { - return tsutils_1.isBinaryExpression(node) && node.operatorToken.kind === ts.SyntaxKind.PlusToken; -} -function isStringLike(node) { - switch (node.kind) { - case ts.SyntaxKind.StringLiteral: - case ts.SyntaxKind.NoSubstitutionTemplateLiteral: - case ts.SyntaxKind.TemplateExpression: - return true; - default: - return false; - } -} -var templateObject_1; |