From 121d18c0733ce5f4bc3bcf1d06b65ab2e84aa1b6 Mon Sep 17 00:00:00 2001
From: Chris Mills <chrisdavidmills@gmail.com>
Date: Thu, 12 Feb 2026 15:08:08 +0000
Subject: [PATCH] Chrome 146 scroll-triggered animations

---
 .../timeline-trigger-exit-range-end.json      |  38 +++
 .../timeline-trigger-exit-range-start.json    |  38 +++
 .../timeline-trigger-exit-range.json          |  38 +++
 .../timeline-trigger-range-end.json           |  38 +++
 .../timeline-trigger-range-start.json         |  38 +++
 css/properties/timeline-trigger-range.json    |  38 +++
 css/types/animation-action.json               | 286 ++++++++++++++++++
 7 files changed, 514 insertions(+)
 create mode 100644 css/properties/timeline-trigger-exit-range-end.json
 create mode 100644 css/properties/timeline-trigger-exit-range-start.json
 create mode 100644 css/properties/timeline-trigger-exit-range.json
 create mode 100644 css/properties/timeline-trigger-range-end.json
 create mode 100644 css/properties/timeline-trigger-range-start.json
 create mode 100644 css/properties/timeline-trigger-range.json
 create mode 100644 css/types/animation-action.json

diff --git a/css/properties/timeline-trigger-exit-range-end.json b/css/properties/timeline-trigger-exit-range-end.json
new file mode 100644
index 00000000000000..15e9224d6ff9b7
--- /dev/null
+++ b/css/properties/timeline-trigger-exit-range-end.json
@@ -0,0 +1,38 @@
+{
+  "css": {
+    "properties": {
+      "timeline-trigger-exit-range-end": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-animations-2/#propdef-timeline-trigger-exit-range-end",
+          "support": {
+            "chrome": {
+              "alternative_name": "timeline-trigger-active-range-end",
+              "version_added": "146"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/timeline-trigger-exit-range-start.json b/css/properties/timeline-trigger-exit-range-start.json
new file mode 100644
index 00000000000000..bc5519a7b6de65
--- /dev/null
+++ b/css/properties/timeline-trigger-exit-range-start.json
@@ -0,0 +1,38 @@
+{
+  "css": {
+    "properties": {
+      "timeline-trigger-exit-range-start": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-animations-2/#propdef-timeline-trigger-exit-range-start",
+          "support": {
+            "chrome": {
+              "alternative_name": "timeline-trigger-active-range-start",
+              "version_added": "146"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/timeline-trigger-exit-range.json b/css/properties/timeline-trigger-exit-range.json
new file mode 100644
index 00000000000000..5cbe51c3f58d1d
--- /dev/null
+++ b/css/properties/timeline-trigger-exit-range.json
@@ -0,0 +1,38 @@
+{
+  "css": {
+    "properties": {
+      "timeline-trigger-exit-range": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-animations-2/#propdef-timeline-trigger-exit-range",
+          "support": {
+            "chrome": {
+              "alternative_name": "timeline-trigger-active-range",
+              "version_added": "146"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/timeline-trigger-range-end.json b/css/properties/timeline-trigger-range-end.json
new file mode 100644
index 00000000000000..267159549b8fcc
--- /dev/null
+++ b/css/properties/timeline-trigger-range-end.json
@@ -0,0 +1,38 @@
+{
+  "css": {
+    "properties": {
+      "timeline-trigger-range-end": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-animations-2/#propdef-timeline-trigger-range-end",
+          "support": {
+            "chrome": {
+              "alternative_name": "timeline-trigger-activation-range-end",
+              "version_added": "146"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/timeline-trigger-range-start.json b/css/properties/timeline-trigger-range-start.json
new file mode 100644
index 00000000000000..78089719e5bfcc
--- /dev/null
+++ b/css/properties/timeline-trigger-range-start.json
@@ -0,0 +1,38 @@
+{
+  "css": {
+    "properties": {
+      "timeline-trigger-range-start": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-animations-2/#propdef-timeline-trigger-range-start",
+          "support": {
+            "chrome": {
+              "alternative_name": "timeline-trigger-activation-range-start",
+              "version_added": "146"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/properties/timeline-trigger-range.json b/css/properties/timeline-trigger-range.json
new file mode 100644
index 00000000000000..62ab3ab5c8ffdc
--- /dev/null
+++ b/css/properties/timeline-trigger-range.json
@@ -0,0 +1,38 @@
+{
+  "css": {
+    "properties": {
+      "timeline-trigger-range": {
+        "__compat": {
+          "spec_url": "https://drafts.csswg.org/css-animations-2/#propdef-timeline-trigger-range",
+          "support": {
+            "chrome": {
+              "alternative_name": "timeline-trigger-activation-range",
+              "version_added": "146"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/css/types/animation-action.json b/css/types/animation-action.json
new file mode 100644
index 00000000000000..91ea636869288e
--- /dev/null
+++ b/css/types/animation-action.json
@@ -0,0 +1,286 @@
+{
+  "css": {
+    "types": {
+      "animation-action": {
+        "__compat": {
+          "description": "`<animation-action>`",
+          "spec_url": "https://drafts.csswg.org/css-animations-2/#typedef-animation-action",
+          "support": {
+            "chrome": {
+              "version_added": "146"
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": false
+            },
+            "firefox_android": "mirror",
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "version_added": false
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror",
+            "webview_ios": "mirror"
+          },
+          "status": {
+            "experimental": true,
+            "standard_track": true,
+            "deprecated": false
+          }
+        },
+        "none": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-action-none",
+            "support": {
+              "chrome": {
+                "version_added": "146"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "pause": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-action-pause",
+            "support": {
+              "chrome": {
+                "version_added": "146"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "play": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-action-play",
+            "support": {
+              "chrome": {
+                "version_added": "146"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "play-backwards": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-action-play-backwards",
+            "support": {
+              "chrome": {
+                "version_added": "146"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "play-forwards": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-action-play-forwards",
+            "support": {
+              "chrome": {
+                "version_added": "146"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "play-once": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-action-play-once",
+            "support": {
+              "chrome": {
+                "version_added": "146"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "replay": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-action-replay",
+            "support": {
+              "chrome": {
+                "version_added": "146"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
+        "reset": {
+          "__compat": {
+            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-action-reset",
+            "support": {
+              "chrome": {
+                "version_added": "146"
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        }
+      }
+    }
+  }
+}