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4 changes: 2 additions & 2 deletions src/internal.ts
Original file line number Diff line number Diff line change
Expand Up @@ -109,7 +109,7 @@ function initIntercoms() {

const portFrame = incomingPort.sender.frameId

if (portFrame)
if (portFrame !== undefined)
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This would allow nulls to pass this check. Should this be portFrame || portFrame === 0 instead?

portId = `${portId}.${portFrame}`

// literal tab id in case of content script, however tab id of inspected page in case of devtools context
Expand Down Expand Up @@ -202,7 +202,7 @@ export function routeMessage(message: IInternalMessage): void | Promise<void> {
: (`${(destName === 'window' ? 'content-script' : destName)}@${(destTabId || srcTabId)}`)

// Here it is checked if a specific frame needs to receive the message
if (destFrameId)
if (destFrameId !== undefined)
resolvedDestination = `${resolvedDestination}.${destFrameId}`

const destPort = portMap.get(resolvedDestination)
Expand Down