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Channel.hasSubscribers property | Node.js diagnostics_channel module | Bun

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property

diagnostics_channel.Channel.hasSubscribersreadonly hasSubscribers: booleanCheck if there are active subscribers to this channel. This is helpful if the message you want to send might be expensive to prepare.

This API is optional but helpful when trying to publish messages from very performance-sensitive code.

import diagnostics_channel from 'node:diagnostics_channel'; const channel = diagnostics_channel.channel('my-channel'); if (channel.hasSubscribers) { // There are subscribers, prepare and publish message }

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