nandi.uk
Fork of daniellemaywood.uk/gleam — Wasm codegen work
7.9 kB
250 lines
1# Changelog
2
3## Unreleased
4
5### Compiler
6
7- Removed compiler hint about pattern matching a `Result(a, b)` when being used where `a` is expected.
8 ([Kieran O'Reilly](https://github.com/SoTeKie))
9
10- Optimised code generated for record updates.
11 ([yoshi](https://github.com/joshi-monster))
12
13- The compiler now allows for record updates to change the generic type
14 parameters of the record:
15
16 ```gleam
17 type Box(value) {
18 Box(password: String, value: value)
19 }
20
21 fn insert(box: Box(a), value: b) -> Box(b) {
22 Box(..box, value:)
23 }
24 ```
25
26 ([yoshi](https://github.com/joshi-monster))
27
28- It is now allowed to write a block with no expressions. Like an empty function
29 body, an empty block is considered incomplete as if it contained a `todo`
30 expression.
31 ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
32
33- The shorthand names for the two targets, `erl` and `js` are now
34 deprecated in code such as `@target`.
35
36 ([Surya Rose](https://github.com/GearsDatapacks))
37
38- A custom panic message can now be specified when asserting a value with `let assert`:
39
40 ```gleam
41 let assert Ok(regex) = regex.compile("ab?c+") as "This regex is always valid"
42 ```
43
44 ([Surya Rose](https://github.com/GearsDatapacks))
45
46- When targeting JavaScript the compiler now generates faster and smaller code
47 for `Int` values in bit array expressions and patterns by evaluating them at
48 compile time where possible.
49 ([Richard Viney](https://github.com/richard-viney))
50
51- Qualified records can now be used in clause guards.
52 ([Surya Rose](https://github.com/GearsDatapacks))
53
54- The compiler now allows deprecating specific custom type variants using the
55 `@deprecated` attribute:
56
57 ```gleam
58 pub type HashAlgorithm {
59 @deprecated("Please upgrade to another algorithm")
60 Md5
61 Sha224
62 Sha512
63 }
64
65 pub fn hash_password(input: String) -> String {
66 hash(input:, algorithm: Md5) // Warning: Deprecated value used
67 }
68 ```
69
70 ([Iesha](https://github.com/wilbert-mad))
71
72- On the JavaScript target, taking byte-aligned slices of bit arrays is now an
73 O(1) operation instead of O(N), significantly improving performance.
74 ([Richard Viney](https://github.com/richard-viney))
75
76- Better error message for existed type constructor being used as value constructor.
77 ([Jiangda Wang](https://github.com/Frank-III))
78
79### Build tool
80
81- Improved the error message you get when trying to add a package that doesn't
82 exist with `gleam add`.
83 ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
84
85- External files (such as `.mjs` and `.erl`) are now permitted in subdirectories
86 of `src/` and `test/`.
87 ([PgBiel](https://github.com/PgBiel))
88
89- `gleam publish` now requires more verbose confirmation for publishing Gleam
90 team packages and v0 packages.
91 ([Louis Pilfold](https://github.com/lpil))
92
93- `gleam publish` now warns when publishing packages that define multiple top-level
94 modules, as this can lead to namespace pollution and conflicts for consumers.
95 ([Aleksei Gurianov](https://github.com/guria))
96
97- New projects now require `gleam_stdlib` v0.44.0.
98
99- `gleam remove` no longer requires a network connection.
100 ([yoshi](https://github.com/joshi-monster))
101
102- Commands that work with the Hex package manager API now create and store an
103 API key rather than creating a new one each time. This API key is encrypted
104 with a local password, reducing risk of your Hex password being compromised.
105 ([Louis Pilfold](https://github.com/lpil))
106
107### Language Server
108
109- The language server now provides type information when hovering over argument
110 labels.
111
112 ([Surya Rose](https://github.com/GearsDatapacks))
113
114- The Language Server now suggests a code action to desugar a use expression
115 into the equivalent function call. For example, this snippet of code:
116
117 ```gleam
118 pub fn main() {
119 use profile <- result.try(fetch_profile(user))
120 render_welcome(user, profile)
121 }
122 ```
123
124 Will be turned into:
125
126 ```gleam
127 pub fn main() {
128 result.try(fetch_profile(user), fn(profile) {
129 render_welcome(user, profile)
130 })
131 }
132 ```
133
134 ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
135
136- The Language Server now suggests a code action to turn a function call into
137 the equivalent use expression. For example, this snippet of code:
138
139 ```gleam
140 pub fn main() {
141 result.try(fetch_profile(user) fn(profile) {
142 render_welcome(user, profile)
143 })
144 }
145 ```
146
147 Will be turned into:
148
149 ```gleam
150 pub fn main() {
151 use profile <- result.try(fetch_profile(user))
152 render_welcome(user, profile)
153 }
154 ```
155
156 ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
157
158- The language server now provides correct information when hovering over
159 patterns in use expressions.
160
161- The language server now suggests a code action to convert an inexhaustive
162 `let` assignment into a `case` expression:
163
164 ```gleam
165 pub fn unwrap_result(result: Result(a, b)) -> a {
166 let Ok(inner) = result
167 inner
168 }
169 ```
170
171 Becomes:
172
173 ```gleam
174 pub fn unwrap_result(result: Result(a, b)) -> a {
175 let inner = case result {
176 Ok(inner) -> inner
177 Error(_) -> todo
178 }
179 inner
180 }
181 ```
182
183 ([Surya Rose](https://github.com/GearsDatapacks))
184
185### Formatter
186
187- The formatter now adds a `todo` inside empty blocks.
188 ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
189
190### Bug fixed
191
192- The compiler now throws an error when a float literal ends with an `e` and
193 is missing an exponent.
194 ([Surya Rose](https://github.com/GearsDatapacks))
195
196- Fixed a crash with ENOTEMPTY (os error 39) when building on NTFS partitions
197 ([Ivan Ermakov](https://github.com/ivanjermakov))
198
199- Fixed a bug where the compiler would crash when pattern matching on multiple
200 subjects and one of them being a constant record.
201 ([Surya Rose](https://github.com/GearsDatapacks))
202
203- Variant inference on prelude types now works correctly if the variant is constant.
204 ([Surya Rose](https://github.com/GearsDatapacks))
205
206- Fixed a bug where patterns in `use` expressions would not be checked to ensure that
207 they were exhaustive.
208 ([Surya Rose](https://github.com/GearsDatapacks))
209
210- Fixed a bug where a `module.mjs` file would be overwritten by a `module.gleam`
211 file of same name without warning. It now produces an error.
212 ([PgBiel](https://github.com/PgBiel))
213
214- Modules depending on removed or renamed modules now get automatically recompiled.
215 ([Sakari Bergen](https://github.com/sbergen))
216
217- The compiler now raises a warning for unused case expressions, code blocks and
218 pipelines that would be safe to remove.
219 ([Giacomo Cavalieri](https://github.com/giacomocavalieri))
220
221- Fixed a bug where assigning the prefix of a string pattern to a variable
222 nested inside another pattern would produce invalid code on Javascript.
223 ([yoshi](https://github.com/joshi-monster))
224
225- Fixed a bug where expressions which use an unsafe integer on JavaScript would
226 not emit a warning if an @external function had been referenced.
227 ([Richard Viney](https://github.com/richard-viney))
228
229- Fixed a bug where nested tuple access would not be parsed correctly when
230 the left-hand side was a function call.
231 ([Surya Rose](https://github.com/GearsDatapacks))
232
233- Fixed a bug where Gleam would be unable to compile to BEAM bytecode on older
234 versions of Erlang/OTP.
235 ([yoshi](https://github.com/joshi-monster))
236
237- Fixed a bug where the inferred variant of values was not properly cached,
238 leading to incorrect errors on incremental builds and in the Language Server.
239 ([Surya Rose](https://github.com/GearsDatapacks))
240
241 - Fixed a bug where Gleam would be unable to compile to BEAM bytecode if the
242 project path contains a non-ascii character.
243 ([yoshi](https://github.com/joshi-monster))
244
245## v1.6.1 - 2024-11-19
246
247### Bug fixed
248
249- Fixed a bug where `gleam update` would fail to update versions.
250 ([Jason Sipula](https://github.com/SnakeDoc))