diff --git a/test/fixtures/experimental/nullish-coalescing-operator/associativity/actual.js b/test/fixtures/experimental/nullish-coalescing-operator/associativity/actual.js
new file mode 100644
index 0000000000..1b247875fc
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/associativity/actual.js
@@ -0,0 +1 @@
+a ?? b ?? c;
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/associativity/expected.json b/test/fixtures/experimental/nullish-coalescing-operator/associativity/expected.json
new file mode 100644
index 0000000000..45384c754d
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/associativity/expected.json
@@ -0,0 +1,132 @@
+{
+  "type": "File",
+  "start": 0,
+  "end": 12,
+  "loc": {
+    "start": {
+      "line": 1,
+      "column": 0
+    },
+    "end": {
+      "line": 1,
+      "column": 12
+    }
+  },
+  "program": {
+    "type": "Program",
+    "start": 0,
+    "end": 12,
+    "loc": {
+      "start": {
+        "line": 1,
+        "column": 0
+      },
+      "end": {
+        "line": 1,
+        "column": 12
+      }
+    },
+    "sourceType": "script",
+    "body": [
+      {
+        "type": "ExpressionStatement",
+        "start": 0,
+        "end": 12,
+        "loc": {
+          "start": {
+            "line": 1,
+            "column": 0
+          },
+          "end": {
+            "line": 1,
+            "column": 12
+          }
+        },
+        "expression": {
+          "type": "BinaryExpression",
+          "start": 0,
+          "end": 11,
+          "loc": {
+            "start": {
+              "line": 1,
+              "column": 0
+            },
+            "end": {
+              "line": 1,
+              "column": 11
+            }
+          },
+          "left": {
+            "type": "BinaryExpression",
+            "start": 0,
+            "end": 6,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 0
+              },
+              "end": {
+                "line": 1,
+                "column": 6
+              }
+            },
+            "left": {
+              "type": "Identifier",
+              "start": 0,
+              "end": 1,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 0
+                },
+                "end": {
+                  "line": 1,
+                  "column": 1
+                },
+                "identifierName": "a"
+              },
+              "name": "a"
+            },
+            "operator": "??",
+            "right": {
+              "type": "Identifier",
+              "start": 5,
+              "end": 6,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 5
+                },
+                "end": {
+                  "line": 1,
+                  "column": 6
+                },
+                "identifierName": "b"
+              },
+              "name": "b"
+            }
+          },
+          "operator": "??",
+          "right": {
+            "type": "Identifier",
+            "start": 10,
+            "end": 11,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 10
+              },
+              "end": {
+                "line": 1,
+                "column": 11
+              },
+              "identifierName": "c"
+            },
+            "name": "c"
+          }
+        }
+      }
+    ],
+    "directives": []
+  }
+}
\ No newline at end of file
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/associativity/options.json b/test/fixtures/experimental/nullish-coalescing-operator/associativity/options.json
new file mode 100644
index 0000000000..e70662682b
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/associativity/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["nullishCoalescingOperator"]
+}
+  
\ No newline at end of file
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/multiline/actual.js b/test/fixtures/experimental/nullish-coalescing-operator/multiline/actual.js
new file mode 100644
index 0000000000..fc603903ff
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/multiline/actual.js
@@ -0,0 +1,3 @@
+a 
+  ?? b
+  ?? c;
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/multiline/expected.json b/test/fixtures/experimental/nullish-coalescing-operator/multiline/expected.json
new file mode 100644
index 0000000000..99f325b056
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/multiline/expected.json
@@ -0,0 +1,132 @@
+{
+  "type": "File",
+  "start": 0,
+  "end": 17,
+  "loc": {
+    "start": {
+      "line": 1,
+      "column": 0
+    },
+    "end": {
+      "line": 3,
+      "column": 7
+    }
+  },
+  "program": {
+    "type": "Program",
+    "start": 0,
+    "end": 17,
+    "loc": {
+      "start": {
+        "line": 1,
+        "column": 0
+      },
+      "end": {
+        "line": 3,
+        "column": 7
+      }
+    },
+    "sourceType": "script",
+    "body": [
+      {
+        "type": "ExpressionStatement",
+        "start": 0,
+        "end": 17,
+        "loc": {
+          "start": {
+            "line": 1,
+            "column": 0
+          },
+          "end": {
+            "line": 3,
+            "column": 7
+          }
+        },
+        "expression": {
+          "type": "BinaryExpression",
+          "start": 0,
+          "end": 16,
+          "loc": {
+            "start": {
+              "line": 1,
+              "column": 0
+            },
+            "end": {
+              "line": 3,
+              "column": 6
+            }
+          },
+          "left": {
+            "type": "BinaryExpression",
+            "start": 0,
+            "end": 9,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 0
+              },
+              "end": {
+                "line": 2,
+                "column": 6
+              }
+            },
+            "left": {
+              "type": "Identifier",
+              "start": 0,
+              "end": 1,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 0
+                },
+                "end": {
+                  "line": 1,
+                  "column": 1
+                },
+                "identifierName": "a"
+              },
+              "name": "a"
+            },
+            "operator": "??",
+            "right": {
+              "type": "Identifier",
+              "start": 8,
+              "end": 9,
+              "loc": {
+                "start": {
+                  "line": 2,
+                  "column": 5
+                },
+                "end": {
+                  "line": 2,
+                  "column": 6
+                },
+                "identifierName": "b"
+              },
+              "name": "b"
+            }
+          },
+          "operator": "??",
+          "right": {
+            "type": "Identifier",
+            "start": 15,
+            "end": 16,
+            "loc": {
+              "start": {
+                "line": 3,
+                "column": 5
+              },
+              "end": {
+                "line": 3,
+                "column": 6
+              },
+              "identifierName": "c"
+            },
+            "name": "c"
+          }
+        }
+      }
+    ],
+    "directives": []
+  }
+}
\ No newline at end of file
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/multiline/options.json b/test/fixtures/experimental/nullish-coalescing-operator/multiline/options.json
new file mode 100644
index 0000000000..e70662682b
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/multiline/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["nullishCoalescingOperator"]
+}
+  
\ No newline at end of file
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/actual.js b/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/actual.js
new file mode 100644
index 0000000000..4809548d80
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/actual.js
@@ -0,0 +1 @@
+a |> b ?? c;
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/expected.json b/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/expected.json
new file mode 100644
index 0000000000..9ac8a339b0
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/expected.json
@@ -0,0 +1,132 @@
+{
+  "type": "File",
+  "start": 0,
+  "end": 12,
+  "loc": {
+    "start": {
+      "line": 1,
+      "column": 0
+    },
+    "end": {
+      "line": 1,
+      "column": 12
+    }
+  },
+  "program": {
+    "type": "Program",
+    "start": 0,
+    "end": 12,
+    "loc": {
+      "start": {
+        "line": 1,
+        "column": 0
+      },
+      "end": {
+        "line": 1,
+        "column": 12
+      }
+    },
+    "sourceType": "script",
+    "body": [
+      {
+        "type": "ExpressionStatement",
+        "start": 0,
+        "end": 12,
+        "loc": {
+          "start": {
+            "line": 1,
+            "column": 0
+          },
+          "end": {
+            "line": 1,
+            "column": 12
+          }
+        },
+        "expression": {
+          "type": "BinaryExpression",
+          "start": 0,
+          "end": 11,
+          "loc": {
+            "start": {
+              "line": 1,
+              "column": 0
+            },
+            "end": {
+              "line": 1,
+              "column": 11
+            }
+          },
+          "left": {
+            "type": "Identifier",
+            "start": 0,
+            "end": 1,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 0
+              },
+              "end": {
+                "line": 1,
+                "column": 1
+              },
+              "identifierName": "a"
+            },
+            "name": "a"
+          },
+          "operator": "|>",
+          "right": {
+            "type": "BinaryExpression",
+            "start": 5,
+            "end": 11,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 5
+              },
+              "end": {
+                "line": 1,
+                "column": 11
+              }
+            },
+            "left": {
+              "type": "Identifier",
+              "start": 5,
+              "end": 6,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 5
+                },
+                "end": {
+                  "line": 1,
+                  "column": 6
+                },
+                "identifierName": "b"
+              },
+              "name": "b"
+            },
+            "operator": "??",
+            "right": {
+              "type": "Identifier",
+              "start": 10,
+              "end": 11,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 10
+                },
+                "end": {
+                  "line": 1,
+                  "column": 11
+                },
+                "identifierName": "c"
+              },
+              "name": "c"
+            }
+          }
+        }
+      }
+    ],
+    "directives": []
+  }
+}
\ No newline at end of file
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/options.json b/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/options.json
new file mode 100644
index 0000000000..37fbfac05f
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/precedence-high/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["nullishCoalescingOperator", "pipelineOperator"]
+}
+  
\ No newline at end of file
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/actual.js b/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/actual.js
new file mode 100644
index 0000000000..2b0c8c8ff8
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/actual.js
@@ -0,0 +1 @@
+a && b ?? c;
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/expected.json b/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/expected.json
new file mode 100644
index 0000000000..57c4decc9f
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/expected.json
@@ -0,0 +1,132 @@
+{
+  "type": "File",
+  "start": 0,
+  "end": 12,
+  "loc": {
+    "start": {
+      "line": 1,
+      "column": 0
+    },
+    "end": {
+      "line": 1,
+      "column": 12
+    }
+  },
+  "program": {
+    "type": "Program",
+    "start": 0,
+    "end": 12,
+    "loc": {
+      "start": {
+        "line": 1,
+        "column": 0
+      },
+      "end": {
+        "line": 1,
+        "column": 12
+      }
+    },
+    "sourceType": "script",
+    "body": [
+      {
+        "type": "ExpressionStatement",
+        "start": 0,
+        "end": 12,
+        "loc": {
+          "start": {
+            "line": 1,
+            "column": 0
+          },
+          "end": {
+            "line": 1,
+            "column": 12
+          }
+        },
+        "expression": {
+          "type": "BinaryExpression",
+          "start": 0,
+          "end": 11,
+          "loc": {
+            "start": {
+              "line": 1,
+              "column": 0
+            },
+            "end": {
+              "line": 1,
+              "column": 11
+            }
+          },
+          "left": {
+            "type": "LogicalExpression",
+            "start": 0,
+            "end": 6,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 0
+              },
+              "end": {
+                "line": 1,
+                "column": 6
+              }
+            },
+            "left": {
+              "type": "Identifier",
+              "start": 0,
+              "end": 1,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 0
+                },
+                "end": {
+                  "line": 1,
+                  "column": 1
+                },
+                "identifierName": "a"
+              },
+              "name": "a"
+            },
+            "operator": "&&",
+            "right": {
+              "type": "Identifier",
+              "start": 5,
+              "end": 6,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 5
+                },
+                "end": {
+                  "line": 1,
+                  "column": 6
+                },
+                "identifierName": "b"
+              },
+              "name": "b"
+            }
+          },
+          "operator": "??",
+          "right": {
+            "type": "Identifier",
+            "start": 10,
+            "end": 11,
+            "loc": {
+              "start": {
+                "line": 1,
+                "column": 10
+              },
+              "end": {
+                "line": 1,
+                "column": 11
+              },
+              "identifierName": "c"
+            },
+            "name": "c"
+          }
+        }
+      }
+    ],
+    "directives": []
+  }
+}
\ No newline at end of file
diff --git a/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/options.json b/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/options.json
new file mode 100644
index 0000000000..e70662682b
--- /dev/null
+++ b/test/fixtures/experimental/nullish-coalescing-operator/precedence-low/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["nullishCoalescingOperator"]
+}
+  
\ No newline at end of file