wasm wrapper around postman2openapi

Cargo.toml

[package]
name = "postman2openapi-wasm"
version = "0.1.0"
authors = ["Kevin Swiber <[email protected]>"]
edition = "2018"

[lib]
crate-type = ["cdylib", "rlib"]

[features]
default = ["console_error_panic_hook"]

[dependencies]
wasm-bindgen = "0.2.63"
postman2openapi = { path = "../postman2openapi" }

# The `console_error_panic_hook` crate provides better debugging of panics by
# logging them with `console.error`. This is great for development, but requires
# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
# code size when deploying.
console_error_panic_hook = { version = "0.1.6", optional = true }

# `wee_alloc` is a tiny allocator for wasm that is only ~1K in code size
# compared to the default allocator's ~10K. It is slower than the default
# allocator, however.
#
# Unfortunately, `wee_alloc` requires nightly Rust when targeting wasm for now.
wee_alloc = { version = "0.4.5", optional = true }

[dev-dependencies]
wasm-bindgen-test = "0.3.13"

[profile.release]
# Tell `rustc` to optimize for small code size.
opt-level = "z"
lto = true

[package.metadata.wasm-pack.profile.release]
wasm-opt = ["-Oz", "--enable-mutable-globals"]

index.js

import { default as collection } from './collection';
import * as postman2openapi from "postman2openapi-wasm";

const postman = JSON.stringify(collection);
const openapi = postman2openapi.from_str(postman, 'yaml');

const textarea = document.createElement('textarea');
textarea.style = "width: 100%; height: 700px;";
textarea.value = openapi;

document.body.appendChild(textarea);

lib.rs

use postman2openapi::TargetFormat;
use std::result::Result;
use std::str::FromStr;
use wasm_bindgen::prelude::*;

// When the `wee_alloc` feature is enabled, use `wee_alloc` as the global
// allocator.
#[cfg(feature = "wee_alloc")]
#[global_allocator]
static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;

#[wasm_bindgen]
pub fn from_str(collection: &str, format: &str) -> Result<String, JsValue> {
    match postman2openapi::from_str(
        collection,
        TargetFormat::from_str(format).unwrap_or(TargetFormat::Yaml),
    ) {
        Ok(val) => Ok(val),
        Err(err) => Err(JsValue::from_str(&err.to_string())),
    }
}