jscop

Introduction

jscop is a static code analyser written in node js.

Checks

• missing curling braces
• debugger statement
• duplicate property name
• empty block statements
• empty statements
• eval
• expressive parameter use
• unused variables
• global leaks
• missing semicolon
• detect named function expressions
• strict equality check
• trailing array comma
• unused parameter check
• with statement check
• variable name check
• identifier reserved words "implements", "interface", "let", "package", "private", "protected", "public", "static", "yield"
• ; after function declarations
• x=x assignments

Contribution

• Pick one of the missing checks below, or send in a new check
• Write at least one positive and one false positive test
• Run the tests

npm install && npm test

TODO:

• boolean trap http://ariya.ofilabs.com/2011/08/hall-of-api-shame-boolean-trap.html

• check documentation

• var x = 1; return x; *combine var statements *pretty print javascript

• check access globals

• global var check

• function declaration inside loops

• for in -> hasOwnProperty

• deep of nested ifs

• inconsistent return points

• case without break check

• one statement per line

• redeclared function

• redeclared variable

• single qoutes

• unreachable code check

• unused function arguments check

• variable declaration after usage

• inconsistent return points

• duplicate declaration: var twice, var with same name as function, var with same name as parameter, function with same name as parameter

• if (true), if (1 == 1), if (!true), if (0), if (number) -> if statement with literal

• check function names

Code style

• spaces/tabs
• amout of spaces