83 lines
1.9 KiB
JavaScript
83 lines
1.9 KiB
JavaScript
import { getTermios } from './termios.ts';
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import { IRuntime, RunTimeType } from './types.ts';
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let scrollRuntime: IRuntime | null = null;
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/**
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* Kill program, displaying an error message
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* @param s
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*/
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export async function die(s: string | Error): Promise<void> {
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(await getTermios()).disableRawMode();
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console.error(s);
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(await getRuntime()).exit();
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}
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/**
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* Determine which Typescript runtime we are operating under
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*/
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export function getRuntimeType(): RunTimeType {
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let runtime = RunTimeType.Unknown;
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if ('Deno' in globalThis) {
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runtime = RunTimeType.Deno;
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}
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if ('Bun' in globalThis) {
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runtime = RunTimeType.Bun;
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}
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return runtime;
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}
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export async function getRuntime(): Promise<IRuntime> {
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if (scrollRuntime === null) {
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const runtime = getRuntimeType();
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const path = `../${runtime}/mod.ts`;
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const pkg = await import(path);
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if ('default' in pkg) {
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scrollRuntime = pkg.default;
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}
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}
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return Promise.resolve(scrollRuntime!);
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}
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/**
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* Import a runtime-specific module
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*
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* eg. to load "src/bun/mod.ts", if the runtime is bun,
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* you can use like so `await importForRuntime('index')`;
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*
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* @param path - the path within the runtime module
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*/
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export const importForRuntime = async (path: string) => {
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const runtime = getRuntimeType();
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const suffix = '.ts';
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const base = `../${runtime}/`;
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const pathParts = path.split('/')
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.filter((part) => part !== '' && part !== '.' && part !== suffix)
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.map((part) => part.replace(suffix, ''));
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const cleanedPath = pathParts.join('/');
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const importPath = base + cleanedPath + suffix;
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return await import(importPath);
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};
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/**
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* Import the default export for a runtime-specific module
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* (this is just a simple wrapper of `importForRuntime`)
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*
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* @param path - the path within the runtime module
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*/
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export const importDefaultForRuntime = async (path: string) => {
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const pkg = await importForRuntime(path);
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if ('default' in pkg) {
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return pkg.default;
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}
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return null;
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};
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