diff options
author | Florian Dold <florian.dold@gmail.com> | 2017-05-28 00:38:50 +0200 |
---|---|---|
committer | Florian Dold <florian.dold@gmail.com> | 2017-05-28 00:40:43 +0200 |
commit | 7fff4499fd915bcea3fa93b1aa8b35f4fe7a6027 (patch) | |
tree | 6de9a1aebd150a23b7f8c273ec657a5d0a18fe3e /node_modules/tslint/lib/rules/callableTypesRule.js | |
parent | 963b7a41feb29cc4be090a2446bdfe0c1f1bcd81 (diff) | |
download | wallet-core-7fff4499fd915bcea3fa93b1aa8b35f4fe7a6027.tar.xz |
add linting (and some initial fixes)
Diffstat (limited to 'node_modules/tslint/lib/rules/callableTypesRule.js')
-rw-r--r-- | node_modules/tslint/lib/rules/callableTypesRule.js | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/node_modules/tslint/lib/rules/callableTypesRule.js b/node_modules/tslint/lib/rules/callableTypesRule.js new file mode 100644 index 000000000..485aa230e --- /dev/null +++ b/node_modules/tslint/lib/rules/callableTypesRule.js @@ -0,0 +1,90 @@ +"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 = (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, sigSuggestion) { + return type + " has only a call signature \u2014 use `" + sigSuggestion + "` instead."; + }; + Rule.prototype.apply = function (sourceFile) { + return this.applyWithFunction(sourceFile, walk); + }; + return Rule; +}(Lint.Rules.AbstractRule)); +/* tslint:disable:object-literal-sort-keys */ +Rule.metadata = { + ruleName: "callable-types", + description: "An interface or literal type with just a call signature can be written as a function type.", + rationale: "style", + optionsDescription: "Not configurable.", + options: null, + type: "style", + typescriptOnly: true, + hasFix: true, +}; +exports.Rule = Rule; +function walk(ctx) { + return ts.forEachChild(ctx.sourceFile, function cb(node) { + if ((tsutils_1.isInterfaceDeclaration(node) && noSupertype(node) + || tsutils_1.isTypeLiteralNode(node)) + && node.members.length === 1) { + var member = node.members[0]; + if (tsutils_1.isCallSignatureDeclaration(member) && + // avoid bad parse + member.type !== undefined) { + var suggestion = renderSuggestion(member, node, ctx.sourceFile); + ctx.addFailureAtNode(member, Rule.FAILURE_STRING_FACTORY(node.kind === ts.SyntaxKind.TypeLiteral ? "Type literal" : "Interface", suggestion), Lint.Replacement.replaceNode(node, suggestion)); + } + } + return ts.forEachChild(node, cb); + }); +} +/** True if there is no supertype or if the supertype is `Function`. */ +function noSupertype(node) { + if (node.heritageClauses === undefined) { + return true; + } + if (node.heritageClauses.length !== 1) { + return false; + } + var expr = node.heritageClauses[0].types[0].expression; + return tsutils_1.isIdentifier(expr) && expr.text === "Function"; +} +function renderSuggestion(call, parent, sourceFile) { + var start = call.getStart(sourceFile); + var colonPos = call.type.pos - 1 - start; + var text = sourceFile.text.substring(start, call.end); + var suggestion = text.substr(0, colonPos) + " =>" + text.substr(colonPos + 1); + if (parent.kind === ts.SyntaxKind.InterfaceDeclaration) { + if (parent.typeParameters !== undefined) { + return "type" + sourceFile.text.substring(parent.name.pos, parent.typeParameters.end + 1) + " = " + suggestion; + } + else { + return "type " + parent.name.text + " = " + suggestion; + } + } + return suggestion.endsWith(";") ? suggestion.slice(0, -1) : suggestion; +} |