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* Flow JS Testing
*
* Copyright 2020-2021 Dapper Labs, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {config, withPrefix} from "@onflow/fcl"
import {exec} from "child_process"
import {createServer} from "net"
import * as semver from "semver"
export const isObject = arg => typeof arg === "object" && arg !== null
export const isString = obj => typeof obj === "string" || obj instanceof String
export const isAddress = address => /^0x[0-9a-f]{0,16}$/.test(address)
export function getAvailablePorts(count = 1) {
if (count === 0) return Promise.resolve([])
return new Promise((resolve, reject) => {
const server = createServer()
server.listen(0, () => {
const port = server.address().port
server.close(async err => {
Iif (err) reject(err)
resolve([...(await getAvailablePorts(count - 1)), port])
})
})
})
}
/**
* Get the Flow CLI version
* @param {string} flowCommand - the Flow CLI command name
* @returns {Promise<import("semver").SemVer>}
*/
export async function getFlowVersion(flowCommand = "flow") {
return new Promise((resolve, reject) => {
exec(`${flowCommand} version --output=json`, (error, stdout) => {
Iif (error) {
reject(
"Could not determine Flow CLI version, please make sure it is installed and available in your PATH"
)
} else {
let versionStr
try {
versionStr = JSON.parse(stdout).version
} catch (error) {
// fallback to regex for older versions of the CLI without JSON output
const rxResult = /^Version: ([^\s]+)/m.exec(stdout)
if (rxResult) {
versionStr = rxResult[1]
}
}
const version = versionStr ? semver.parse(versionStr) : undefined
Iif (!version) {
reject(`Invalid Flow CLI version string: ${versionStr}`)
}
resolve(version)
}
})
})
}
export const getServiceAddress = async () => {
return withPrefix(await config().get("SERVICE_ADDRESS"))
}
export function parsePath(path) {
const rxResult = /(\w+)\/(\w+)/.exec(path)
Iif (!rxResult) {
throw Error(`${path} is not a correct path`)
}
return {
domain: rxResult[1],
slot: rxResult[2],
}
}
export const getValueByKey = (keys, value) => {
Iif (!value) {
return null
}
if (keys.length > 0 && !isObject(value)) {
return null
}
if (typeof keys === "string") {
return getValueByKey(keys.split("."), value)
}
const [first, ...rest] = keys
if (!first) {
return value
}
Iif (!rest) {
return value[first]
}
return getValueByKey(rest, value[first])
}
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