Update field mutation error message (#1742)

2 files changed, 50 insertions, 7 deletions

diff --git a/tests/typ/compiler/dict.typ b/tests/typ/compiler/dict.typ
index 6a2f1c7c..b257394f 100644
--- a/tests/typ/compiler/dict.typ
+++ b/tests/typ/compiler/dict.typ
@@ -92,10 +92,3 @@
 ---
 // Error: 3-15 cannot mutate a temporary value
 #((key: "val").other = "some")
-
----
-#{
-  let object = none
-  // Error: 3-9 expected dictionary, found none
-  object.property = "value"
-}
diff --git a/tests/typ/compiler/field.typ b/tests/typ/compiler/field.typ
index 5c28a92c..a99959ea 100644
--- a/tests/typ/compiler/field.typ
+++ b/tests/typ/compiler/field.typ
@@ -148,3 +148,53 @@
 #test((top + start).y, top)
 #test((bottom + end).y, bottom)
 #test((horizon + center).y, horizon)
+
+---
+#{
+  let object = sym.eq.not
+  // Error: 3-9 cannot mutate fields on symbol
+  object.property = "value"
+}
+
+---
+#{
+  let object = [hi]
+  // Error: 3-9 cannot mutate fields on content
+  object.property = "value"
+}
+
+---
+#{
+  let object = calc
+  // Error: 3-9 cannot mutate fields on module
+  object.property = "value"
+}
+
+---
+#{
+  let object = calc.sin
+  // Error: 3-9 cannot mutate fields on function
+  object.property = "value"
+}
+
+---
+#{
+  let object = none
+  // Error: 3-9 none does not have accessible fields
+  object.property = "value"
+}
+
+---
+#{
+  let object = 10
+  // Error: 3-9 integer does not have accessible fields
+  object.property = "value"
+}
+
+---
+#{
+  let s = 1pt + red
+  // Error: 3-4 fields on stroke are not yet mutable
+  // Hint: 3-4 try creating a new stroke with the updated field value instead
+  s.thickness = 5pt
+}