@exercism/javascript-representer

Installation

Clone this repository and then run:

yarn install

You'll need at least Node LTS for this to work.

yarn build

Global installation

If you want to use this package as a local tool, you can install it globally, in order to make the "binaries" available:

yarn global add @exercism/javascript-representer

On *nix systems or enabled shells (wsl, bash, git bash, etc.) you can now use javascript-representer <slug> <input> [<output>] [-flag] [--flags] to represent a local file (at input), or javascript-representer-remote https://exercism.org/... [<output>] [-flag] [--flags] to work on a remote solution.

Usage

If you're developing this, you can run this via yarn or the provided shell script.

• .sh enabled systems (UNIX, WSL): yarn represent:dev
• .bat fallback (cmd.exe, Git Bash for Windows): yarn represent:dev:bat

You'll want these :dev variants because it will build the required code (it will transpile from TypeScript to JavaScript, which is necessary to run this in Node environments, unlike Deno environments). When on Windows, if you're using Git Bash for Windows or a similar terminal, the .sh files will work, but will open a new window (which closes after execution). The .bat scripts will work in the same terminal.

You can also manually build using yarn or yarn build, and then run the script directly: ./bin/represent.sh arg1 -o2 --option3.

Run this with the argument help to see how to use this:

yarn represent:dev:bat help

Usage | represent.js <exercise> <input-directory> [<output-directory>] [options]

Options:
 ... see below

Examples:
  represent.js two-fer ~/javascript/two-fer/128/

  Represent the two-fer solution from the input directory "~/javascript/two-fer/128"

Options

short	long	description
	--version	Show version number	boolean
-d	--debug	Unless given, only outputs warnings and errors	boolean (default: false)
-c	--console	If given, outputs to the console	boolean (default: false)
--or	--output_representation	Path relative to the output dir where the representation is stored	string (default: "./representation.txt")
--om	--output_mapping	Path relative to the output dir where the mapping is stored	string (default: "./mapping.json")
-u	--ugly	If given, does not format the JSON output using 2 space indentation	boolean (default: false)
	--dry	If given, does not output anything to disk	boolean (default: false)
-h	--help	Show help	boolean

When using development, likely you'll want -dc to also print the output and debug message to the console. You can use --dry to prevent the script from writing to disk. When the <output-directory> is not given, it default to the given <input-directory>

Remote solutions

There are tools provided to run the representer on remote solutions.

• .sh enabled systems (UNIX, WSL): bin/scripts/remote.sh url
• .bat fallback (cmd.exe, Git Bash for Windows): bin\scripts\remote.bat url

You can pass the following type of URLs:

• Published solutions: /tracks/javascript/exercises/<slug>/<id>
• Mentor solutions: /mentor/solutions/<id>
• Your solutions: /my/solutions/<id>
• Private solutions: /solutions/<id>
• Constructed urls: /solutions/<uid> (use the download button when mentoring)

Using docker

To create the image, execute the following command from the repository root:

docker build -t exercism/javascript-representer .

To run from docker pass in the solutions path as a volume and execute with the necessary parameters:

docker run -v $(PATH_TO_SOLUTION):/solution exercism/javascript-representer ${SLUG} /solution

Example:

docker run -v ~/solution-238382y7sds7fsadfasj23j:/solution exercism/javascript-representer two-fer /solution

Formatting code

The easiest way to satisfy the code-format linter is to add a comment to your PR:

/format

Alternatively, run the following command:

bin/format.sh