Mar 23, 2026 · Mar 23, 2026
diff --git a/Python/sysmodule.c b/Python/sysmodule.c

 EM_JS(char *, _Py_emscripten_runtime, (void), {
    var info;
    if (typeof navigator == 'object') {
    if (typeof process === "object") {
        if (process.versions?.bun) {
            info = `bun v${process.versions.bun}`;
        } else if (process.versions?.deno) {
            info = `deno v${process.versions.deno}`;
        } else {
            // As far as I can tell, every JavaScript runtime puts "node" in
            // process.release.name. Pyodide once checked for
            //
            // process.release.name === "node"
            //
            // and this is apparently part of the reason other runtimes started
            // lying about it. Similar to the situation with userAgent.
            //
            // But just in case some other JS runtime decides to tell us what it
            // is, we'll pick it up.
            const name = process.release?.name ?? "node";
            info = `${name} ${process.version}`;
        }
        // Include v8 version if we know it
        if (process.versions?.v8) {
            info +=  ` (v8 ${process.versions.v8})`;
        }
    } else if (typeof navigator === "object") {
        info = navigator.userAgent;
    } else if (typeof process == 'object') {
        info = "Node.js ".concat(process.version);
    } else {
        info = "UNKNOWN";
    }
    var len = lengthBytesUTF8(info) + 1;
    var res = _malloc(len);
    if (res) stringToUTF8(info, res, len);
 #if __wasm64__
    return BigInt(res);
    return BigInt(stringToNewUTF8(info));
 #else
    returnres;
    returnstringToNewUTF8(info);
 #endif
 });
Original file line number	Diff line number	Diff line change
Expand Up		@@ -3878,20 +3878,38 @@ static PyStructSequence_Desc emscripten_info_desc = {

		EM_JS(char *, _Py_emscripten_runtime, (void), {
		var info;
		if (typeof navigator == 'object') {
		if (typeof process === "object") {
		if (process.versions?.bun) {
		info = `bun v${process.versions.bun}`;
		} else if (process.versions?.deno) {
		info = `deno v${process.versions.deno}`;
		} else {
		// As far as I can tell, every JavaScript runtime puts "node" in
		// process.release.name. Pyodide once checked for
		//
		// process.release.name === "node"
		//
		// and this is apparently part of the reason other runtimes started
		// lying about it. Similar to the situation with userAgent.
		//
		// But just in case some other JS runtime decides to tell us what it
		// is, we'll pick it up.
		const name = process.release?.name ?? "node";
		info = `${name} ${process.version}`;
		}
		// Include v8 version if we know it
		if (process.versions?.v8) {
		info += ` (v8 ${process.versions.v8})`;
		}
		} else if (typeof navigator === "object") {
		info = navigator.userAgent;
		} else if (typeof process == 'object') {
		info = "Node.js ".concat(process.version);
		} else {
		info = "UNKNOWN";
		}
		var len = lengthBytesUTF8(info) + 1;
		var res = _malloc(len);
		if (res) stringToUTF8(info, res, len);
		#if __wasm64__
		return BigInt(res);
		return BigInt(stringToNewUTF8(info));
		#else
		returnres;
		returnstringToNewUTF8(info);
		#endif
		});

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