tslint-immutable

<!doctype html> <html lang="en"> <head> <title>Code coverage report for noLetRule.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="prettify.css" /> <link rel="stylesheet" href="base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="index.html">All files</a> noLetRule.ts </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 100% Statements 28/28 </div> <div class='fl pad1y space-right2'> 94.44% Branches 17/18 </div> <div class='fl pad1y space-right2'> 100% Functions 4/4 </div> <div class='fl pad1y space-right2'> 100% Lines 27/27 </div> </div> </div> <div class='status-line high'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108</td><td class="line-coverage quiet">1x 1x 1x 1x                   1x                 343x 343x 343x                 343x 29x 29x   314x             343x         17x       17x           17x 17x     326x             46x   43x             43x 48x 48x             34x                       34x     43x   3x    </td><td class="text"><pre class="prettyprint lang-js">import * as ts from "typescript"; import * as Lint from "tslint"; import * as Ignore from "./shared/ignore"; import { InvalidNode, createInvalidNode, CheckNodeResult, createCheckNodeRule } from "./shared/check-node";   type Options = Ignore.IgnoreLocalOption & Ignore.IgnorePrefixOption;   // tslint:disable-next-line:variable-name export const Rule = createCheckNodeRule( Ignore.checkNodeWithIgnore(checkNode), "Unexpected let, use const instead." );   function checkNode( node: ts.Node, ctx: Lint.WalkContext<Options> ): CheckNodeResult { const variableStatementFailures = chectVariableStatement(node, ctx); const forStatementsFailures = checkForStatements(node, ctx); return { invalidNodes: [...variableStatementFailures, ...forStatementsFailures] }; }   function chectVariableStatement( node: ts.Node, ctx: Lint.WalkContext<Options> ): ReadonlyArray<InvalidNode> { if (node.kind === ts.SyntaxKind.VariableStatement) { const variableStatementNode: ts.VariableStatement = node as ts.VariableStatement; return checkDeclarationList(variableStatementNode.declarationList, ctx); } return []; }   function checkForStatements( node: ts.Node, ctx: Lint.WalkContext<Options> ): ReadonlyArray<InvalidNode> { if ( node.kind === ts.SyntaxKind.ForStatement || node.kind === ts.SyntaxKind.ForInStatement || node.kind === ts.SyntaxKind.ForOfStatement ) { const forStatmentNode = node as | ts.ForStatement | ts.ForInStatement | ts.ForOfStatement; Eif ( forStatmentNode.initializer && forStatmentNode.initializer.kind === ts.SyntaxKind.VariableDeclarationList && Lint.isNodeFlagSet(forStatmentNode.initializer, ts.NodeFlags.Let) ) { const declarationList = forStatmentNode.initializer as ts.VariableDeclarationList; return checkDeclarationList(declarationList, ctx); } } return []; }   function checkDeclarationList( declarationList: ts.VariableDeclarationList, ctx: Lint.WalkContext<Options> ): ReadonlyArray<InvalidNode> { if (Lint.isNodeFlagSet(declarationList, ts.NodeFlags.Let)) { // It is a let declaration, now check each variable that is declared const invalidVariableDeclarationNodes = []; // If the declaration list contains multiple variables, eg. let x = 0, y = 1, mutableZ = 3; then // we should only provide one fix for the list even if two variables are invalid. // NOTE: When we have a mix of allowed and disallowed variables in the same DeclarationList // there is no sure way to know if we should do a fix or not, eg. if ignore-prefix=mutable // and the list is "let x, mutableZ", then "x" is invalid but "mutableZ" is valid, should we change // "let" to "const" or not? For now we change to const if at least one variable is invalid. let addFix = true; for (const variableDeclarationNode of declarationList.declarations) { if ( !Ignore.shouldIgnorePrefix( variableDeclarationNode, ctx.options, ctx.sourceFile ) ) { invalidVariableDeclarationNodes.push( createInvalidNode( variableDeclarationNode, addFix ? new Lint.Replacement( declarationList.getStart(ctx.sourceFile), "let".length, "const" ) : undefined ) ); addFix = false; } } return invalidVariableDeclarationNodes; } return []; }  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank">istanbul</a> at Tue Jan 16 2018 21:59:42 GMT+0100 (CET) </div> </div> <script src="prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="sorter.js"></script> </body> </html>