feat: create micro-plugin-prettier

Author: gamemaker1

assets/repo.json

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+[
+	{
+		"Name": "prettier",
+		"Description": "Format your code using Prettier",
+		"Website": "https://github.com/gamemaker1/micro-plugin-prettier",
+		"Tags": ["javascript", "node", "nodejs", "typescript", "formatting"],
+		"Versions": [
+			{
+				"Version": "0.1.0",
+				"Url": "https://github.com/gamemaker1/micro-plugin-prettier/releases/latest/download/prettier-0.1.0.zip",
+				"Require": {
+					"micro": ">=1.0.3"
+				}
+			}
+		]
+	}
+]

license.md

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+# ISC License
+
+Copyright 2021 Vedant K <https://github.com/gamemaker1>
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.

readme.md

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+# <div align="center"> Micro <3 Prettier </div>
+
+> A [`micro`](https://github.com/zyedidia/micro) plugin that formats files using
+> [`prettier`](https://github.com/prettier/prettier).
+
+## Installation and Usage
+
+```
+micro --plugin install prettier
+```
+
+The next time you edit and save a file using micro, it will get automatically
+formatted using Prettier.
+
+## Issues and Contributing
+
+Found a bug? Don't like something? Want to see something added/changed? Open
+[an issue](https://github.com/gamemaker1/micro-plugin-prettier/issues/new)!
+
+## License
+
+This plugin is licensed under the ISC license. See the [license file](license.md)
+for the complete license text.

source/prettier.lua

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+VERSION = "0.1.0"
+
+-- prettier
+-- A micro plugin that automatically formats files using prettier on save
+
+-- Plugin source: https://github.com/gamemaker1/micro-plugin-prettier
+-- Prettier source: https://github.com/prettier/prettier
+
+local micro = import("micro")
+local shell = import("micro/shell")
+local buffer = import("micro/buffer")
+local config = import("micro/config")
+
+-- Run prettier on any of these files
+local prettierFileTypes = {
+	"javascript",
+	"typescript",
+	"jsx", "tsx",
+	"angular",
+	"vue", "svelte",
+	"flow",
+	"css", "less", "scss",
+	"html",
+	"json", "yaml",
+	"graphql",
+	"markdown"
+}
+-- The default configuration for prettier
+-- See https://prettier.io/docs/en/options.html
+local preferences = {
+	tabWidth = "2",
+	useTabs = "false",
+	semi = "true",
+	singleQuote = "false",
+	quoteProps = "as-needed",
+	jsxSingleQuotes = "false",
+	trailingComma = "es5",
+	bracketSpacing = "true",
+	bracketSameLine = "false",
+	arrowParens = "always",
+	proseWrap = "preserve",
+	endOfLine = "lf",
+	embeddedLanguageFormatting = "auto",
+	vueIndentScriptAndStyle = "false",
+	htmlWhitespaceSensitivity = "css",
+	requirePragma = "false",
+	insertPragma = "false"
+}
+
+-- Check if a table has a certain value
+local function hasValue(tab, val)
+	for index, value in ipairs(tab) do
+		if value == val then
+			return true
+		end
+	end
+
+	return false
+end
+
+-- Format the given file
+function format(file)
+	-- Save the file first
+	file:Save()
+
+	-- Check if prettier can find user provided configuration
+	local pathToConfig, error = shell.RunCommand(
+		"prettier" .. " --no-color --find-config-path " .. file.Buf.Path
+	)
+
+	-- If not, then use the preferences set for this plugin
+	local options = ""
+	if string.sub(pathToConfig, 1, 7) == "[error]" then
+		for key, value in pairs(preferences) do
+			value = file.Buf.Settings["prettier" .. "." .. key] or config.GetGlobalOption("prettier" .. "." .. key) or value
+
+			options = options .. " --" .. key:gsub("%u", function (word)
+				return "-" .. string.lower(word)
+			end) .. "=" .. tostring(value)
+		end
+	end
+
+	-- Run prettier
+	local message, error = shell.RunCommand(
+		"prettier" .. options .. " --no-color --write " .. file.Buf.Path
+	)
+	-- If we encounter an error, flash a message on the bar at the bottom and dump
+	-- the message in the logs
+	if error ~= nil then
+		micro.InfoBar():Error(
+			"Prettier: an error occurred while formatting the file. Check the logs (Ctrl+E > log) for the full error."
+		)
+		buffer.Log(message)
+
+		return
+	end
+
+	file.Buf:ReOpen()
+end
+
+-- On file save hook
+function onSave(file)
+	-- If the current file is of any of the above types and the user has enabled
+	-- `formatOnSave`, then format away!
+	if hasValue(prettierFileTypes, file.Buf:FileType()) and config.GetGlobalOption("prettier.formatOnSave") then
+		format(file)
+	end
+
+	return true
+end
+
+-- Editor initialization hook
+function init()
+	-- Register prettier specific configuration
+	for key, value in ipairs(preferences) do
+		config.RegisterCommonOption("prettier", key, value)
+	end
+	-- Register plugin specific options
+	config.RegisterCommonOption("prettier", "formatOnSave", true)
+	
+	-- Register the `format` command
+	config.MakeCommand("format", format, config.NoComplete)
+end