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CompilerOptions.ts

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import * as ts from "typescript";

import { JsxEmit } from "typescript";

import * as diagnosticFactories from "./transpilation/diagnostics";

import { Plugin } from "./transpilation/plugins";

type OmitIndexSignature<T> = {

[K in keyof T as string extends K ? never : number extends K ? never : K]: T[K];

};

export interface TransformerImport {

transform: string;

import?: string;

after?: boolean;

afterDeclarations?: boolean;

type?: "program" | "config" | "checker" | "raw" | "compilerOptions";

[option: string]: any;

}

export interface LuaPluginImport {

name: string;

import?: string;

[option: string]: any;

}

export interface InMemoryLuaPlugin {

plugin: Plugin | ((options: Record<string, any>) => Plugin);

[option: string]: any;

}

export interface TypeScriptToLuaOptions {

buildMode?: BuildMode;

extension?: string;

luaBundle?: string;

luaBundleEntry?: string;

luaTarget?: LuaTarget;

luaLibImport?: LuaLibImportKind;

luaPlugins?: Array<LuaPluginImport | InMemoryLuaPlugin>;

noImplicitGlobalVariables?: boolean;

noImplicitSelf?: boolean;

noHeader?: boolean;

noResolvePaths?: string[];

plugins?: Array<ts.PluginImport | TransformerImport>;

sourceMapTraceback?: boolean;

tstlVerbose?: boolean;

lua51AllowTryCatchInAsyncAwait?: boolean;

measurePerformance?: boolean;

}

export type CompilerOptions = OmitIndexSignature<ts.CompilerOptions> &

TypeScriptToLuaOptions & {

[option: string]: any;

};

export enum LuaLibImportKind {

None = "none",

Inline = "inline",

Require = "require",

RequireMinimal = "require-minimal",

}

export enum LuaTarget {

Universal = "universal",

Lua50 = "5.0",

Lua51 = "5.1",

Lua52 = "5.2",

Lua53 = "5.3",

Lua54 = "5.4",

Lua55 = "5.5",

LuaJIT = "JIT",

Luau = "Luau",

}

export enum BuildMode {

Default = "default",

Library = "library",

}

export const isBundleEnabled = (options: CompilerOptions) =>

options.luaBundle !== undefined && options.luaBundleEntry !== undefined;

export function validateOptions(options: CompilerOptions): ts.Diagnostic[] {

const diagnostics: ts.Diagnostic[] = [];

if (options.luaBundle && !options.luaBundleEntry) {

diagnostics.push(diagnosticFactories.luaBundleEntryIsRequired());

}

if (options.luaBundle && options.luaLibImport === LuaLibImportKind.Inline) {

diagnostics.push(diagnosticFactories.usingLuaBundleWithInlineMightGenerateDuplicateCode());

}

if (options.luaBundle && options.buildMode === BuildMode.Library) {

diagnostics.push(diagnosticFactories.cannotBundleLibrary());

}

if (options.jsx && options.jsx !== JsxEmit.React) {

diagnostics.push(diagnosticFactories.unsupportedJsxEmit());

}

return diagnostics;

}