81 lines
2.7 KiB
TypeScript
81 lines
2.7 KiB
TypeScript
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/**
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* Return only the user arguments (excluding runtime executable and script path),
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* across Node.js, Deno (run/compiled), and Bun.
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*
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* - Deno: uses Deno.args directly (already user-only in both run and compile).
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* - Node/Bun: uses process.execPath's basename to decide if there is a script arg.
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* If execPath basename is a known launcher (node/nodejs/bun/deno), skip 2; else skip 1.
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*/
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export function getUserArgs(argv?: string[]): string[] {
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// If argv is explicitly provided, use it instead of Deno.args
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// This handles test scenarios where process.argv is manually modified
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const useProvidedArgv = argv !== undefined;
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// Prefer Deno.args when available and no custom argv provided;
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// it's the most reliable for Deno run and compiled.
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// deno-lint-ignore no-explicit-any
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const g: any = typeof globalThis !== 'undefined' ? globalThis : {};
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if (!useProvidedArgv && g.Deno && g.Deno.args && Array.isArray(g.Deno.args)) {
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return g.Deno.args.slice();
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}
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const a =
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argv ?? (typeof process !== 'undefined' && Array.isArray(process.argv) ? process.argv : []);
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if (!Array.isArray(a) || a.length === 0) return [];
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// Determine execPath in Node/Bun (or compat shims)
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let execPath = '';
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if (typeof process !== 'undefined' && typeof process.execPath === 'string') {
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execPath = process.execPath;
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} else if (g.Deno && typeof g.Deno.execPath === 'function') {
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// Fallback for unusual shims: try Deno.execPath() if present.
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try {
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execPath = g.Deno.execPath();
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} catch {
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/* ignore */
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}
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}
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const base = basename(execPath).toLowerCase();
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const knownLaunchers = new Set([
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'node',
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'node.exe',
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'nodejs',
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'nodejs.exe',
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'bun',
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'bun.exe',
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'deno',
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'deno.exe',
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'tsx',
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'tsx.exe',
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'ts-node',
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'ts-node.exe',
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]);
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// Always skip the executable (argv[0]).
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let offset = Math.min(1, a.length);
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// If the executable is a known runtime launcher, there's almost always a script path in argv[1].
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// This handles Node, Bun, and "deno run" (but NOT "deno compile" which won't match 'deno').
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if (knownLaunchers.has(base)) {
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offset = Math.min(2, a.length);
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}
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// Safety: if offset would skip all elements and array is not empty, don't skip anything
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// This handles edge cases like test environments with unusual argv setups
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if (offset >= a.length && a.length > 0) {
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offset = 0;
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}
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// Note: we intentionally avoid path/URL heuristics on argv[1] so we don't
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// accidentally drop the first user arg when it's a path-like value in compiled mode.
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return a.slice(offset);
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}
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function basename(p: string): string {
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if (!p) return '';
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const parts = p.split(/[/\\]/);
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return parts[parts.length - 1] || '';
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}
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