How to use the etcher-sdk.multiWrite function in etcher-sdk
To help you get started, we’ve selected a few etcher-sdk examples, based on popular ways it is used in public projects.
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balena-io / etcher / lib / gui / modules / child-writer.js View on Github 
const writeAndValidate = async (source, destinations, verify, trim, onProgress, onFail) => {
let innerSource = await source.getInnerSource()
if (trim && (await innerSource.canRead())) {
innerSource = new sdk.sourceDestination.ConfiguredSource(
innerSource,
trim,
// Create stream from file-disk (not source stream)
true
)
}
const { failures, bytesWritten } = await sdk.multiWrite.pipeSourceToDestinations(
innerSource,
destinations,
onFail,
onProgress,
verify
)
const result = {
bytesWritten,
devices: {
failed: failures.size,
successful: destinations.length - failures.size
},
errors: []
}
for (const [ destination, error ] of failures) {
error.device = destination.drive.device
