feat: create @volar/coc.nvim and export middleware

volarjs#12

Author: johnsoncodehk

packages/coc.nvim/LICENSE

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+MIT License
+
+Copyright (c) 2023-present Johnson Chu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/coc.nvim/package.json

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+{
+	"name": "@volar/coc.nvim",
+	"version": "1.4.0-alpha.2",
+	"main": "out/index.js",
+	"license": "MIT",
+	"files": [
+		"out/**/*.js",
+		"out/**/*.d.ts"
+	],
+	"repository": {
+		"type": "git",
+		"url": "https://github.com/volarjs/volar.js.git",
+		"directory": "packages/coc.nvim"
+	},
+	"dependencies": {
+		"@volar/language-server": "1.4.0-alpha.2"
+	},
+	"devDependencies": {
+		"coc.nvim": "latest"
+	},
+	"peerDependencies": {
+		"coc.nvim": "*"
+	}
+}

packages/coc.nvim/src/index.ts

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+import * as coc from 'coc.nvim';
+import { Location } from '@volar/language-server';
+
+// TODO: @volar/vscode/src/features/*
+
+export const middleware: coc.Middleware = {
+	async provideCodeActions(document, range, context, token, next) {
+		let actions = await next(document, range, context, token);
+		actions = actions?.map(action => {
+			if (typeof action.command === 'object') {
+				action.command = parseServerCommand(action.command);
+			}
+			return action;
+		});
+		return actions;
+	},
+	async resolveCodeAction(item, token, next) {
+		const action = await next(item, token);
+		if (action?.command) {
+			action.command = parseServerCommand(action.command);
+		}
+		return action;
+	},
+	async provideCodeLenses(document, token, next) {
+		let codeLenses = await next(document, token);
+		codeLenses = codeLenses?.map(action => {
+			if (action.command) {
+				action.command = parseServerCommand(action.command);
+			}
+			return action;
+		});
+		return codeLenses;
+	},
+	async resolveCodeLens(item, token, next) {
+		const codeLens = await next(item, token);
+		if (codeLens?.command) {
+			codeLens.command = parseServerCommand(codeLens.command);
+		}
+		return codeLens;
+	},
+};
+
+export function parseServerCommand(command: coc.Command) {
+	if (command.command === 'editor.action.rename' && command.arguments) {
+		return {
+			...command,
+			// TODO: test editor.action.rename command behavior in coc.nvim
+			arguments: [[
+				coc.Uri.parse(command.arguments[0]),
+				coc.Position.create(command.arguments[1].line, command.arguments[1].character),
+			]],
+		};
+	}
+	else if (command.command === 'editor.action.showReferences' && command.arguments) {
+		return {
+			...command,
+			arguments: [
+				coc.Uri.parse(command.arguments[0]),
+				coc.Position.create(command.arguments[1].line, command.arguments[1].character),
+				command.arguments[2].map((ref: Location) => coc.Location.create(
+					ref.uri,
+					coc.Range.create(ref.range.start.line, ref.range.start.character, ref.range.end.line, ref.range.end.character),
+				)),
+			],
+		};
+	}
+	return command;
+}

packages/coc.nvim/tsconfig.build.json

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+{
+	"extends": "../../tsconfig.json",
+	"compilerOptions": {
+		"noEmit": false,
+		"outDir": "out",
+		"rootDir": "src",
+	},
+	"include": [
+		"src"
+	],
+	"references": [
+		{
+			"path": "../language-server/tsconfig.build.json"
+		}
+	]
+}