diff options
| -rw-r--r-- | src/gleam_stdlib.mjs | 2 | ||||
| -rw-r--r-- | test/gleam/dynamic_test.gleam | 10 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/gleam_stdlib.mjs b/src/gleam_stdlib.mjs index 92e872e..22ca8c3 100644 --- a/src/gleam_stdlib.mjs +++ b/src/gleam_stdlib.mjs @@ -673,6 +673,8 @@ export function decode_field(value, name) { ) { const entry = map_get(value, name); return new Ok(entry.isOk() ? new Some(entry[0]) : new None()); + } else if (value === null) { + return not_a_map_error() } else if (Object.getPrototypeOf(value) == Object.prototype) { return try_get_field(value, name, () => new Ok(new None())); } else { diff --git a/test/gleam/dynamic_test.gleam b/test/gleam/dynamic_test.gleam index 4b6fc53..2e36777 100644 --- a/test/gleam/dynamic_test.gleam +++ b/test/gleam/dynamic_test.gleam @@ -79,6 +79,16 @@ pub fn dict_from_null_test() { ) } +@target(javascript) +pub fn null_for_field_test() { + get_null() + |> dynamic.from + |> dynamic.field("x", dynamic.string) + |> should.equal( + Error([DecodeError(expected: "Dict", found: "Null", path: [])]), + ) +} + pub fn string_test() { "" |> dynamic.from |