jsgen: backend cannot transpile the built-in values() function #24209
Description
Describe the bug
The JS backend cannot transpile the builtin values() function.
Reproduction Steps
Create a small V file containing the following code
// main.v
module main
fn main() {
items := {
1: 'one'
2: 'two'
3: 'three'
}
println(items.values())
}And a small HTML file:
// index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>V Web Example</title>
</head>
<body>
<div id="app"></div>
<!-- The compiled JavaScript will be included here -->
<script src="main.js"></script>
</body>
</html>And then transpile it to JavaScript and open the browser:
v -b js_browser main.v & open index.htmlSee the log errors in your browser:
main.js:6373 Uncaught (in promise) ReferenceError: Map_int_string_values is not defined
at js_main (main.js:6373:3)
at main.js:6429:25
Expected Behavior
Be able to transpile the built-in values() function.
Current Behavior
It can't.
Possible Solution
No response
Additional Information/Context
No response
V version
V 0.4.10 d559a62
Environment details (OS name and version, etc.)
| V full version | V 0.4.10 30ececc.d559a62 |
|---|---|
| OS | macos, macOS, 15.3.2, 24D81 |
| Processor | 8 cpus, 64bit, little endian, Apple M1 Pro |
| Memory | 0.72GB/16GB |
| V executable | /Users/gonzalo/v/v |
| V last modified time | 2025-04-13 10:51:40 |
| V home dir | OK, value: /Users/gonzalo/v |
| VMODULES | OK, value: /Users/gonzalo/.vmodules |
| VTMP | OK, value: /tmp/v_501 |
| Current working dir | OK, value: /Users/gonzalo/Projects/Personal/v/rx/examples/example_2 |
| Git version | git version 2.39.1 |
| V git status | weekly.2025.14-39-gd559a62c (3 commit(s) behind V master) |
| .git/config present | true |
| cc version | Apple clang version 17.0.0 (clang-1700.0.13.3) |
| gcc version | Apple clang version 17.0.0 (clang-1700.0.13.3) |
| clang version | Apple clang version 17.0.0 (clang-1700.0.13.3) |
| tcc version | tcc version 0.9.28rc 2024-02-05 HEAD@105d70f7 (AArch64 Darwin) |
| tcc git status | thirdparty-macos-arm64 713692d4 |
| emcc version | N/A |
| glibc version | N/A |
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