imports.js

let crossFetch = (() => {

    if (typeof require === 'function') return require('cross-fetch')

    return fetch

})()

// ^ Isomorphic Fetch

class HTTPImport {
    
    constructor() {

        this._exports = null

        this.wasmImports = {
            HTTP: {
                httpGet: (url, headersString, callbackPointer) => {

                    let stringHeaders = this._exports.__getString(headersString).split(',,,,')
        
                    stringHeaders.pop()
        
                    let headers = {}
        
                    for (let i = 0; i < stringHeaders.length; i++) {
                        headers[stringHeaders[i]] = stringHeaders[i + 1]
                        i++
                    }
        
                    let callback = this.getFn(callbackPointer)
        
                    crossFetch(this._exports.__getString(url), {
                        headers: {
                            ...headers
                        },
                        mode: 'no-cors',
                        method: 'GET'
                    }).then((fetched) => {

                        fetched.text().then((txt) => {

                            callback('', this._exports.__newString(txt))

                        })

                    }).catch(err => {

                        callback(this._exports.__newString(err.message), '')

                    })

                },
                httpPost: (url, headersString, data, callbackPointer) => {

                    let stringHeaders = this._exports.__getString(headersString).split(',,,,')
        
                    stringHeaders.pop()
        
                    let headers = {}
        
                    for (let i = 0; i < stringHeaders.length; i++) {
                        headers[stringHeaders[i]] = stringHeaders[i + 1]
                        i++
                    }
        
                    let callback = this.getFn(callbackPointer)
        
                    crossFetch(this._exports.__getString(url), {
                        headers: {
                            ...headers
                        },
                        mode: 'no-cors',
                        method: 'POST',
                        body: this._exports.__getString(data)
                    }).then((fetched) => {

                        fetched.text().then((txt) => {

                            callback('', this._exports.__newString(txt))

                        })

                    }).catch(err => {

                        callback(this._exports.__newString(err.message), '')

                    })

                }
            }
        }
    }

    get wasmExports() {
		return this._exports
	}
	set wasmExports(e) {
		this._exports = e
        this._exports.__getString = e.__getString
        this._exports.__newString = e.__newString
        this._exports.__newArray = e.__newArray
        this._exports.__getArray = e.__getArray
	}

	getFn(fnIndex) {
		if (!this.wasmExports)
			throw new Error(
				'Make sure you set .wasmExports after instantiating the Wasm module but before running the Wasm module.',
			)
		return this._exports.table.get(fnIndex)
	}
}

module.exports =HTTPImport