vidyasagarv.com
A typst plugin for unit-aware calculations
typst
1# Evaltor: Typst plugin for unit-aware calculations
2
3I initially wanted to use [numbat](https://github.com/sharkdp/numbat) but since it requires access to filesystem (which is not allowed in typst), I ended up choosing [fend](https://printfn.github.io/fend) as the backend.
4
5If I find `fend` to be limiting, I will try to implement in-memory module importer in `numbat` where all the `nbt` files are imported at compile-time.
6
7Built using [typst-wasm](https://github.com/sjfhsjfh/typst-wasm).
8
9First compile the rust code to wasm32 using:
10
11```sh
12rustup target add wasm32-unknown-unknown
13cargo build --release --target wasm32-unknown-unknown
14```
15
16Then install the typst package locally using [tlp](https://tangled.org/vidyasagarv.com/tlp) or [utpm](https://github.com/typst-community/utpm):
17
18```sh
19tlp init
20```
21
22Then you can directly use in typst like:
23
24```typ
25#import "@local/evaltor:0.1.0": print_eval
26
27#print_eval("2 km + 30 m")
28```
29
30will produce the output:
31
32```
332 km + 30 m = 2.03 km
34```
35
36For more details, see [examples.typ](tests/examples.typ) and [fend manual](https://printfn.github.io/fend/documentation/).
37
38
39## Plans
40- Add [rink](https://github.com/tiffany352/rink-rs/) as a backend, gives preference to unit over operation unlike fend.
41- Use [unify](https://github.com/ChHecker/unify) or [zero](https://github.com/Mc-Zen/zero) to format input and output.
42- Check out [numr](https://github.com/nasedkinpv/numr)