playground test with tree-sitter a9818e4b171000eded8944bb2b49f1c68dbac7e3

gistfile1.txt

cd /tmp
git clone https://github.com/tree-sitter/tree-sitter
cd tree-sitter
cargo build --release
cd ..
git clone https://github.com/sogaiu/tree-sitter-janet-simple
cd tree-sitter-janet-simple
../tree-sitter/target/release/tree-sitter generate --abi 14
../tree-sitter/target/release/tree-sitter build --wasm
# works when there is a network connection
../tree-sitter/target/release/tree-sitter playground

# emsdk enabled plus the following may be needed before `cargo build --release`
# to have an offline-enabled `playground` subcommand
cd lib/binding_web
npm install # or your JS package manager of choice
npm run build

# references
#
#   https://tree-sitter.github.io/tree-sitter/6-contributing.html#building