Start implementing error explanations

1 files changed, 30 insertions, 0 deletions

diff --git a/src/errors/MissingField.txt b/src/errors/MissingField.txt
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+++ b/src/errors/MissingField.txt
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+Explanation: You can only access fields on records, like this:
+
+
+    ┌─────────────────────────────────┐
+    │ { foo = True, bar = "ABC" }.foo │  This is valid ...
+    └─────────────────────────────────┘
+
+
+    ┌───────────────────────────────────────────┐
+    │ λ(r : { foo : Bool, bar : Text }) → r.foo │  ... and so is this
+    └───────────────────────────────────────────┘
+
+
+... but you can only access fields if they are present
+
+For example, the following expression is $_NOT valid:
+
+    ┌─────────────────────────────────┐
+    │ { foo = True, bar = "ABC" }.qux │
+    └─────────────────────────────────┘
+                                  ⇧
+                                  Invalid: the record has no ❰qux❱ field
+
+You tried to access a field named:
+
+↳ $txt0
+
+... but the field is missing because the record only defines the following fields:
+
+↳ $txt1