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Fetch bindings for BuckleScript
OCaml JavaScript
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examples gently unfuck example refmt May 31, 2018
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src Fix signature for Headers append and delete (#28) Jun 20, 2019
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LICENSE Add LICENSE Mar 21, 2017 update change log Jun 20, 2019
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package.json 0.5.0 Jun 20, 2019


Low-level bindings to fetch for BuckleScript.

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bs-fetch is intended as a thin layer atop the JS API, upon which more high-level and idiomatic libraries can be made. Once such a library has been established, these bindings will likely be refactored to be even thinner.


  |> then_(Fetch.Response.text)
  |> then_(text => print_endline(text) |> resolve)


npm install --save bs-fetch

Then add bs-fetch to bs-dependencies in your bsconfig.json:

  "bs-dependencies": ["bs-fetch"]


See usage examples in and The source is a single file!

Node.js polyfill

fetch is a Web API that isn't available out-of-the-box in Node.js, and will therefore need to be polyfilled. isomorphic-fetch one such polyfill that seems to work well. Just install it via npm and add [%raw "require('isomorphic-fetch')"] to the top of your main file, but be aware that there are some subtle differences and even parts that are missing entirely.



  • Fixed Headers.append and Headers.delete. They were missing the return type.


  • Bumped bs-platform to 5.0.4 to stop compiler from complaining.


  • Added HeadersInit.makeWithDict so as to be able to make headers in OCaml too
  • Require bs-platform >= 3.0.0 due to internal dependency on Js.boolean that has now been removed


  • Rename Bs_fetch module to Fetch. Bs_fetch is kept around as an alias for backwards compatibility, but should be considered deprecated.
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