chore: import upstream snapshot with attribution

python/ray/air/_internal/json.py

@@ -0,0 +1,31 @@
+import json
+import numbers
+
+import numpy as np
+
+
+class SafeFallbackEncoder(json.JSONEncoder):
+    def __init__(self, nan_str="null", **kwargs):
+        super(SafeFallbackEncoder, self).__init__(**kwargs)
+        self.nan_str = nan_str
+
+    def default(self, value):
+        try:
+            if type(value).__module__ == np.__name__ and isinstance(value, np.ndarray):
+                return value.tolist()
+
+            if isinstance(value, np.bool_):
+                return bool(value)
+
+            if np.isnan(value):
+                return self.nan_str
+
+            if issubclass(type(value), numbers.Integral):
+                return int(value)
+            if issubclass(type(value), numbers.Number):
+                return float(value)
+
+            return super(SafeFallbackEncoder, self).default(value)
+
+        except Exception:
+            return str(value)  # give up, just stringify it (ok for logs)