[ie/youtube] Implement external n/sig solver (#14157)

Closes #14404, Closes #14431, Closes #14680, Closes #14707

Authored by: bashonly, coletdjnz, seproDev, Grub4K

Co-authored-by: coletdjnz <coletdjnz@protonmail.com>
Co-authored-by: bashonly <bashonly@protonmail.com>
Co-authored-by: sepro <sepro@sepr0.com>

yt_dlp/utils/_jsruntime.py

@@ -0,0 +1,101 @@
+from __future__ import annotations
+import abc
+import dataclasses
+import functools
+
+from ._utils import _get_exe_version_output, detect_exe_version, int_or_none
+
+
+# NOT public API
+def runtime_version_tuple(v):
+    # NB: will return (0,) if `v` is an invalid version string
+    return tuple(int_or_none(x, default=0) for x in v.split('.'))
+
+
+@dataclasses.dataclass(frozen=True)
+class JsRuntimeInfo:
+    name: str
+    path: str
+    version: str
+    version_tuple: tuple[int, ...]
+    supported: bool = True
+
+
+class JsRuntime(abc.ABC):
+    def __init__(self, path=None):
+        self._path = path
+
+    @functools.cached_property
+    def info(self) -> JsRuntimeInfo | None:
+        return self._info()
+
+    @abc.abstractmethod
+    def _info(self) -> JsRuntimeInfo | None:
+        raise NotImplementedError
+
+
+class DenoJsRuntime(JsRuntime):
+    MIN_SUPPORTED_VERSION = (2, 0, 0)
+
+    def _info(self):
+        path = self._path or 'deno'
+        out = _get_exe_version_output(path, ['--version'])
+        if not out:
+            return None
+        version = detect_exe_version(out, r'^deno (\S+)', 'unknown')
+        vt = runtime_version_tuple(version)
+        return JsRuntimeInfo(
+            name='deno', path=path, version=version, version_tuple=vt,
+            supported=vt >= self.MIN_SUPPORTED_VERSION)
+
+
+class BunJsRuntime(JsRuntime):
+    MIN_SUPPORTED_VERSION = (1, 0, 31)
+
+    def _info(self):
+        path = self._path or 'bun'
+        out = _get_exe_version_output(path, ['--version'])
+        if not out:
+            return None
+        version = detect_exe_version(out, r'^(\S+)', 'unknown')
+        vt = runtime_version_tuple(version)
+        return JsRuntimeInfo(
+            name='bun', path=path, version=version, version_tuple=vt,
+            supported=vt >= self.MIN_SUPPORTED_VERSION)
+
+
+class NodeJsRuntime(JsRuntime):
+    MIN_SUPPORTED_VERSION = (20, 0, 0)
+
+    def _info(self):
+        path = self._path or 'node'
+        out = _get_exe_version_output(path, ['--version'])
+        if not out:
+            return None
+        version = detect_exe_version(out, r'^v(\S+)', 'unknown')
+        vt = runtime_version_tuple(version)
+        return JsRuntimeInfo(
+            name='node', path=path, version=version, version_tuple=vt,
+            supported=vt >= self.MIN_SUPPORTED_VERSION)
+
+
+class QuickJsRuntime(JsRuntime):
+    MIN_SUPPORTED_VERSION = (2023, 12, 9)
+
+    def _info(self):
+        path = self._path or 'qjs'
+        # quickjs does not have --version and --help returns a status code of 1
+        out = _get_exe_version_output(path, ['--help'], ignore_return_code=True)
+        if not out:
+            return None
+        is_ng = 'QuickJS-ng' in out
+
+        version = detect_exe_version(out, r'^QuickJS(?:-ng)?\s+version\s+(\S+)', 'unknown')
+        vt = runtime_version_tuple(version.replace('-', '.'))
+        if is_ng:
+            return JsRuntimeInfo(
+                name='quickjs-ng', path=path, version=version, version_tuple=vt,
+                supported=vt > (0,))
+        return JsRuntimeInfo(
+            name='quickjs', path=path, version=version, version_tuple=vt,
+            supported=vt >= self.MIN_SUPPORTED_VERSION)