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//// [tests/cases/compiler/APISample_linter.ts] ////
//// [index.d.ts]
declare module "typescript" {
export = ts;
}
//// [APISample_linter.ts]
/*
* Note: This test is a public API sample. The sample sources can be found
* at: https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API#traversing-the-ast-with-a-little-linter
* Please log a "breaking change" issue for any API breaking change affecting this issue
*/
declare var process: any;
declare var console: any;
declare var readFileSync: any;
import * as ts from "typescript";
export function delint(sourceFile: ts.SourceFile) {
delintNode(sourceFile);
function delintNode(node: ts.Node) {
switch (node.kind) {
case ts.SyntaxKind.ForStatement:
case ts.SyntaxKind.ForInStatement:
case ts.SyntaxKind.WhileStatement:
case ts.SyntaxKind.DoStatement:
if ((<ts.IterationStatement>node).statement.kind !== ts.SyntaxKind.Block) {
report(node, "A looping statement's contents should be wrapped in a block body.");
}
break;
case ts.SyntaxKind.IfStatement:
let ifStatement = (<ts.IfStatement>node);
if (ifStatement.thenStatement.kind !== ts.SyntaxKind.Block) {
report(ifStatement.thenStatement, "An if statement's contents should be wrapped in a block body.");
}
if (ifStatement.elseStatement &&
ifStatement.elseStatement.kind !== ts.SyntaxKind.Block &&
ifStatement.elseStatement.kind !== ts.SyntaxKind.IfStatement) {
report(ifStatement.elseStatement, "An else statement's contents should be wrapped in a block body.");
}
break;
case ts.SyntaxKind.BinaryExpression:
let op = (<ts.BinaryExpression>node).operatorToken.kind;
if (op === ts.SyntaxKind.EqualsEqualsToken || op == ts.SyntaxKind.ExclamationEqualsToken) {
report(node, "Use '===' and '!=='.")
}
break;
}
ts.forEachChild(node, delintNode);
}
function report(node: ts.Node, message: string) {
let { line, character } = sourceFile.getLineAndCharacterOfPosition(node.getStart());
console.log(`${sourceFile.fileName} (${line + 1},${character + 1}): ${message}`);
}
}
const fileNames: string[] = process.argv.slice(2);
fileNames.forEach(fileName => {
// Parse a file
let sourceFile = ts.createSourceFile(fileName, readFileSync(fileName).toString(), ts.ScriptTarget.ES2015, /*setParentNodes */ true);
// delint it
delint(sourceFile);
});
//// [APISample_linter.js]
"use strict";
/*
* Note: This test is a public API sample. The sample sources can be found
* at: https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API#traversing-the-ast-with-a-little-linter
* Please log a "breaking change" issue for any API breaking change affecting this issue
*/
exports.__esModule = true;
var ts = require("typescript");
function delint(sourceFile) {
delintNode(sourceFile);
function delintNode(node) {
switch (node.kind) {
case ts.SyntaxKind.ForStatement:
case ts.SyntaxKind.ForInStatement:
case ts.SyntaxKind.WhileStatement:
case ts.SyntaxKind.DoStatement:
if (node.statement.kind !== ts.SyntaxKind.Block) {
report(node, "A looping statement's contents should be wrapped in a block body.");
}
break;
case ts.SyntaxKind.IfStatement:
var ifStatement = node;
if (ifStatement.thenStatement.kind !== ts.SyntaxKind.Block) {
report(ifStatement.thenStatement, "An if statement's contents should be wrapped in a block body.");
}
if (ifStatement.elseStatement &&
ifStatement.elseStatement.kind !== ts.SyntaxKind.Block &&
ifStatement.elseStatement.kind !== ts.SyntaxKind.IfStatement) {
report(ifStatement.elseStatement, "An else statement's contents should be wrapped in a block body.");
}
break;
case ts.SyntaxKind.BinaryExpression:
var op = node.operatorToken.kind;
if (op === ts.SyntaxKind.EqualsEqualsToken || op == ts.SyntaxKind.ExclamationEqualsToken) {
report(node, "Use '===' and '!=='.");
}
break;
}
ts.forEachChild(node, delintNode);
}
function report(node, message) {
var _a = sourceFile.getLineAndCharacterOfPosition(node.getStart()), line = _a.line, character = _a.character;
console.log(sourceFile.fileName + " (" + (line + 1) + "," + (character + 1) + "): " + message);
}
}
exports.delint = delint;
var fileNames = process.argv.slice(2);
fileNames.forEach(function (fileName) {
// Parse a file
var sourceFile = ts.createSourceFile(fileName, readFileSync(fileName).toString(), ts.ScriptTarget.ES2015, /*setParentNodes */ true);
// delint it
delint(sourceFile);
});
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