Support building TS declarations

`./build decl` now builds TS declarations for everything exported by
`sim/`. Unfortunately, the built TS declarations still refer to global
types, so some things still have `any` type, but it's much better than
nothing.

build

@@ -11,7 +11,8 @@ try {
 
 var child_process = require('child_process');
 var fs = require('fs');
-var force = ['--force', 'force', '--full', 'full'].includes(process.argv[2]);
+var decl = ['--decl', 'decl'].includes(process.argv[2]);
+var force = decl || ['--force', 'force', '--full', 'full'].includes(process.argv[2]);
 
 process.chdir(__dirname);
 
@@ -28,16 +29,16 @@ try {
 	) {
 		throw new Error("Sucrase version too old");
 	}
-	require('./tools/build-utils').transpile(force);
 } catch (e) {
 	console.log('Installing dependencies...');
-	shell('npm install --production');
-	// for some reason, sucrase won't be requirable until a tick has passed
-	// see https://stackoverflow.com/questions/53270058/node-cant-find-certain-modules-after-synchronous-install
-	setImmediate(() => {
-		require('./tools/build-utils').transpile(true);
-	});
+	shell('npm install' + (decl ? '' : ' --production'));
+	force = true;
 }
+// for some reason, sucrase won't be requirable until a tick has passed
+// see https://stackoverflow.com/questions/53270058/node-cant-find-certain-modules-after-synchronous-install
+setImmediate(() => {
+	require('./tools/build-utils').transpile(force, decl);
+});
 
 // Make sure config.js exists. If not, copy it over synchronously from
 // config-example.js, since it's needed before we can start the server

lib/crashlogger.ts

@@ -10,6 +10,7 @@
 
 import * as fs from 'fs';
 import * as path from 'path';
+declare const Config: any;
 
 const CRASH_EMAIL_THROTTLE = 5 * 60 * 1000; // 5 minutes
 const LOCKDOWN_PERIOD = 30 * 60 * 1000; // 30 minutes

lib/net.ts

@@ -9,6 +9,7 @@ import * as https from 'https';
 import * as http from 'http';
 import * as url from 'url';
 import * as Streams from './streams';
+declare const Config: any;
 
 export interface PostData {
 	[key: string]: string | number;

lib/repl.ts

@@ -13,6 +13,7 @@ import * as net from 'net';
 import * as path from 'path';
 import * as repl from 'repl';
 import {crashlogger} from './crashlogger';
+declare const Config: any;
 
 export const Repl = new class {
 	/**
@@ -61,7 +62,8 @@ export const Repl = new class {
 	 * non-global context.
 	 */
 	start(filename: string, evalFunction: (input: string) => any) {
-		if ('repl' in Config && !Config.repl) return;
+		const config = typeof Config !== 'undefined' ? Config : {};
+		if (config.repl !== undefined && !config.repl) return;
 
 		// TODO: Windows does support the REPL when using named pipes. For now,
 		// this only supports UNIX sockets.
@@ -70,7 +72,7 @@ export const Repl = new class {
 
 		if (filename === 'app') {
 			// Clean up old REPL sockets.
-			const directory = path.dirname(path.resolve(__dirname, '..', Config.replsocketprefix || 'logs/repl', 'app'));
+			const directory = path.dirname(path.resolve(__dirname, '..', config.replsocketprefix || 'logs/repl', 'app'));
 			for (const file of fs.readdirSync(directory)) {
 				const pathname = path.resolve(directory, file);
 				const stat = fs.statSync(pathname);

sim/battle.ts

@@ -14,6 +14,7 @@ import {State} from './state';
 import {BattleQueue, Action} from './battle-queue';
 import {BattleActions} from './battle-actions';
 import {Utils} from '../lib';
+declare const __version: any;
 
 interface BattleOptions {
 	format?: Format;
@@ -228,12 +229,12 @@ export class Battle {
 			formatid: options.formatid, seed: this.prng.seed,
 		};
 		if (this.rated) inputOptions.rated = this.rated;
-		if (global.__version) {
-			if (global.__version.head) {
-				this.inputLog.push(`>version ${global.__version.head}`);
+		if (typeof __version !== 'undefined') {
+			if (__version.head) {
+				this.inputLog.push(`>version ${__version.head}`);
 			}
-			if (global.__version.origin) {
-				this.inputLog.push(`>version-origin ${global.__version.origin}`);
+			if (__version.origin) {
+				this.inputLog.push(`>version-origin ${__version.origin}`);
 			}
 		}
 		this.inputLog.push(`>start ` + JSON.stringify(inputOptions));

sim/tsconfig.json

@@ -0,0 +1,21 @@
+{
+	"compilerOptions": {
+			"lib": ["es2019"],
+			"emitDeclarationOnly": true,
+			"outDir": "../.sim-dist",
+			"declaration": true,
+			"target": "esnext",
+			"module": "commonjs",
+			"moduleResolution": "node",
+			"strict": true,
+			"allowJs": true,
+			"checkJs": true,
+			"incremental": true,
+			"allowUnreachableCode": false
+	},
+	"types": ["node"],
+	"include": [
+			"./global-types.ts",
+			"./index.ts",
+	]
+}

tools/build-utils.js

@@ -3,6 +3,7 @@
 const {transform} = require("sucrase");
 const fs = require("fs");
 const path = require("path");
+const child_process = require("child_process");
 
 let force = false;
 
@@ -190,7 +191,7 @@ function copyOverDataJSON(file) {
 	});
 }
 
-exports.transpile = (doForce) => {
+exports.transpile = (doForce, decl) => {
 	if (doForce) force = true;
 	if (sucrase('./config', './.config-dist')) {
 		replace('.config-dist', [
@@ -252,4 +253,19 @@ exports.transpile = (doForce) => {
 	copyOverDataJSON('mods/gen6/factory-sets.json');
 
 	// NOTE: replace is asynchronous - add additional replacements for the same path in one call instead of making multiple calls.
+	if (decl) {
+		exports.buildDecls();
+	}
+};
+
+exports.buildDecls = () => {
+	try {
+		child_process.execSync(`node ./node_modules/typescript/bin/tsc -p sim`, {stdio: 'inherit'});
+	} catch (e) {}
+	for (const file of fs.readdirSync(`./.sim-dist/lib/`)) {
+		fs.renameSync(`./.sim-dist/lib/${file}`, `./.lib-dist/${file}`);
+	}
+	for (const file of fs.readdirSync(`./.sim-dist/sim/`)) {
+		fs.renameSync(`./.sim-dist/sim/${file}`, `./.sim-dist/${file}`);
+	}
 };