Parse and output TODOs and FIXMEs from comments in your files

Easily extract, collect and report TODOs and FIXMEs in your code. This project uses regex in order to extract your todos from comments.

Comment format

TODO: add some info

• Spaces are optional.
• Colon is optional.
• Must be in a comment (line or block) in its' own line (some code(); //TODO: do something is not supported).
• Can be prefixed with a @ (i.e @TODO).
• Spaces are trimmed around comment text.
• Supported default types are TODO and FIXME - case insensitive.
• Additional types can be added (using tags in cli and customTags in leasot.parse)
• New extensions can be associated with bundled parsers as many languages have overlapping syntax
• Supports both leading and trailing references. E.g. // TODO(tregusti): Make this better or // TODO: Text /tregusti

Supported languages:

Filetype	Extension	Notes	Parser Name
C#	.cs	Supports // and /* */ comments.	defaultParser
C++/C	.cpp .c .h	Supports // and /* */ comments.	defaultParser
Coffee-React	.cjsx	Supports # comments.	coffeeParser
Coffeescript	.coffee	Supports # comments.	coffeeParser
Crystal	.cr	Supports # comments.	coffeeParser
CSon	.cson	Supports # comments.	coffeeParser
CSS	.css	Supports /* */ comments.	defaultParser
EJS	.ejs	Supports <!-- --> and <%# %>	ejsParser
Erb	.erb	Supports <!-- --> and <%# %>	ejsParser
Erlang	.erl .hrl	Supports % comments.	erlangParser
Go	.go	Supports // and /* */ comments.	defaultParser
Haml	.haml	Supports / -# <!-- --> and <%# %>	twigParser
Handlebars	.hbs .handlebars	Supports {{! }} and {{!-- --}}	hbsParser
Haskell	.hs	Supports --	haskellParser
Hogan	.hgn .hogan	Supports {{! }} and {{!-- --}}	hbsParser
HTML	.html .htm	Supports <!-- -->	twigParser
Jade	.jade .pug	Supports // and //- comments.	jadeParser
Java	.java	Supports // and /* */ comments	defaultParser
Javascript	.js .es .es6	Supports // and /* */ comments	defaultParser
Jsx	.jsx	Supports // and /* */ comments.	defaultParser
Kotlin	.kt	Supports // and /* */ comments.	defaultParser
Less	.less	Supports // and /* */ comments.	defaultParser
Mustache	.mustache	Supports {{! }} and {{!-- --}}	hbsParser
Nunjucks	.njk	Supports {# #} and <!-- -->	twigParser
Objective-C	.m	Supports // and /* */ comments	defaultParser
Objective-C++	.mm	Supports // and /* */ comments	defaultParser
Pascal	.pas	Supports // and { } comments.	pascalParser
Perl	.pl, .pm	Supports # comments.	coffeeParser
PHP	.php	Supports // and /* */ comments.	defaultParser
Python	.py	Supports """ and # comments.	pythonParser
Ruby	.rb	Supports # comments.	coffeeParser
Sass	.sass .scss	Supports // and /* */ comments.	defaultParser
Scala	.scala	Supports // and /* */ comments.	defaultParser
Shell	.sh .zsh .bash	Supports # comments.	coffeeParser
SilverStripe	.ss	Supports <%-- --%> comments.	ssParser
SQL	.sql	Supports -- and /* */ comments	defaultParser & haskellParser
Stylus	.styl	Supports // and /* */ comments.	defaultParser
Swift	.swift	Supports // and /* */ comments.	defaultParser
Twig	.twig	Supports {# #} and <!-- -->	twigParser
Typescript	.ts, .tsx	Supports // and /* */ comments.	defaultParser
Vue	.vue	Supports // /* */ <!-- --> comments.	twigParser
Yaml	.yaml .yml	Supports # comments.	coffeeParser

Javascript is the default parser.

PRs for additional filetypes is most welcomed!!

Usage

Command Line

Installation

$ npm install --global leasot

Examples

$ leasot --help

  Usage: leasot [options] <file ...>

  Parse and output TODOs and FIXMEs from comments in your files

  Options:

    -h, --help                           output usage information
    -V, --version                        output the version number
    -A, --associate-parser [ext,parser]  associate unknown extensions with bundled parsers (parser optional / default: defaultParser)
    -i, --ignore <patterns>              add ignore patterns
    -I, --inline-files                   parse possible inline files
    -r, --reporter [reporter]            use reporter (table|json|xml|markdown|vscode|raw) (default: table)
    -S, --skip-unsupported               skip unsupported filetypes
    -t, --filetype [filetype]            force the filetype to parse. Useful for streams (default: .js)
    -T, --tags <tags>                    add additional comment types to find (alongside todo & fixme)
    -x, --exit-nicely                    exit with exit code 0 even if todos/fixmes are found

  Examples:

    # Check a specific file
    $ leasot index.js

    # Check php files with glob
    $ leasot **/*.php

    # Check multiple different filetypes
    $ leasot app/**/*.js test.rb

    # Use the json reporter
    $ leasot --reporter json index.js

    # Search for REVIEW comments as well
    $ leasot --tags review index.js

    # Add ignore pattern to filter matches
    $ leasot app/**/*.js --ignore "**/custom.js"

    # Search for REVIEW comments as well
    $ leasot --tags review index.js

    # Check a stream specifying the filetype as coffee
    $ cat index.coffee | leasot --filetype .coffee

    # Report from leasot parsing and filter todos using `jq`
    $ leasot tests/**/*.styl --reporter json | jq 'map(select(.kind == "TODO"))' | leasot-reporter

Using in NPM

This package.json snippet shows how to include leasot in your project development environment and set up as a task (todo). The todo_suppress_error task stops leasot causing npm to error, so it can be used in a build process without halting it.

{
    "scripts": {
        "todo": "leasot src/**/*.js",
        "todo_suppress_error": "leasot src/**/*.js || true",
    },
    "devDependencies": {
        "leasot": "*"
    }
}

Programmatic

Installation

$ npm install --save-dev leasot

Examples

var fs = require('fs');
var leasot = require('leasot');

var contents = fs.readFileSync('./contents.js', 'utf8');
// get the filetype of the file, or force a special parser
var filetype = path.extname('./contents.js');
// add file for better reporting
var file = 'contents.js';
var todos = leasot.parse({ ext: filetype, content: contents, fileName: file });

// -> todos now contains the array of todos/fixme parsed

var output = leasot.reporter(todos, {
    reporter: 'json',
    spacing: 2
});

console.log(output);
// -> json output of the todos

Build Time

• gulp-todo
• broccoli-leasot
• todo-webpack-plugin

API

var leasot = require('leasot');

leasot exposes the following API:

.associateExtWithParser(parsers)

Associates a bundled parser with a new extension.

The parsers parameter must be completed in the following format:

{
    '.cls': {
        parserName: 'defaultParser'
    }
}

The parserName property can also be an array of parsers.

{
    '.sql': {
        parserName: ['defaultParser', 'haskellParser']
    }
}

.isExtSupported(extension)

Check whether extension is supported by parser.

Specify an extension including the prefixing dot, for example:

leasot.isExtSupported('.js'); //-> true

Returns: Boolean

.parse(options)

Name	Type	Required	Default	Description
ext	string	Yes		The extension the parse as including a prefixing dot.
content	string	Yes		Content to parse
fileName	string	No		fileName to attach to todos output
customTags	array	No	[]	Additional tags (comment types) to search for (alongside todo & fixme)
withIncludedFiles	boolean	No	false	Parse also possible included file types (for example: css inside a php file
associateParser	object	No		See .associateExtWithParser for syntax

Returns: array of comments.

[{
    file: 'parsedFile.js',
    text: 'comment text',
    kind: 'TODO',
    line: 8,
    ref: 'reference'
}]

.reporter(comments, config)

Use the specified reporter to report the comments.

comments is the array of comments received from leasot.parse().

config is an object that will also be passed to the reporter itself (allowing custom options for each reporter).

It may also contain the specified reporter:

config.reporter

Can be a string indicating the built-in reporter to use, or an external library used as a reporter.

Could also be a custom function (comments, config)

Type: String|Function

Required: false

Default: raw

Built-in Reporters

• json
• xml
• raw
• table
• markdown
• vscode

Each reporter might contain config params that are useful only for that reporter:

Markdown

Returns a markdown version of the todos.

Options

newLine

How to separate lines in the output file. Defaults to your OS's default line separator.

Type: String

Default: Your system default line feed

padding

How many newLines should separate between comment type blocks.

Type: Number

Default: 2

Minimum: 0

transformHeader(kind)

Control the output of a header for each comment kind (i.e todo, fixme).

Type: Function

Default:

transformHeader: function (kind) {
    return ['### ' + kind + 's',
        '| Filename | line # | ' + kind,
        '|:------|:------:|:------'
    ];
}

kind: will be be passed as the comment kind (todo/fixme).

Returns: String[]|String

You are expected to return either an Array of strings or just a string. If you return an array - each item will be separated by a newline in the output.

transformComment(file, line, text, kind, ref)

Control the output for each comment.

Type: Function

Default:

transformComment: function (file, line, text, kind, ref) {
    return ['| ' + file + ' | ' + line + ' | ' + text];
}

file: filename the comment was in.

line: line of comment.

text: comment text. Default ''.

kind: will be be passed as the comment kind (todo/fixme).

ref: a reference. Default ''.

Returns: String[]|String

You are expected to return either an Array of strings or just a string. If you return an array - each item will be separated by a newline in the output.

VSCode

Returns a markdown version of the todos customized for Visual Studio Code. The file names are transformed as URLs and the line numbers as anchors which makes them clickable when the markdown content produced with this reporter is opened on Visual Studio Code.

Table

Returns a pretty formatted table of the todos.

Raw

Just returns the raw javascript todos

JSON

Return a JSON valid representation of the todos.

Options

spacing

Type: Number

Default: 2

XML

Return an unformatted XML valid representation of the todos.

Parsed using json2xml

Options

header

Whether to include xml header

Type: Boolean

Default: true

attributes_key

See https://github.com/estheban/node-json2xml#options--behaviour

Type: Boolean

Default: undefined

License

MIT ©Gilad Peleg