wehub-resource-sync
56 lines
1.3 KiB
JavaScript
56 lines
1.3 KiB
JavaScript
// Browser-safe stub for Node's `node:diagnostics_channel` module.
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//
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// Why this exists:
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// @xterm/addon-ligatures (beta line) bundles lru-cache@11, which imports
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// `channel`/`tracingChannel` from `node:diagnostics_channel` and calls them at
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// module-load time (for optional metrics). In the Electron renderer / Vite dev
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// server this is a browser context: Vite stubs Node builtins with a
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// `browser-external` shim that throws on use, so `channel()` is undefined and
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// the addon crashes on import.
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//
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// lru-cache only publishes metrics when `hasSubscribers` is true, which never
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// happens here (we never subscribe). So all of these can be silent no-ops.
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function makeChannel () {
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return {
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publish () {},
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subscribe () {
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return () => {}
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},
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unsubscribe () {},
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bindStore (store) {
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return store
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},
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unbindStore () {},
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hasSubscribers: false
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}
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}
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export function channel () {
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return makeChannel()
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}
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export function tracingChannel () {
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const ch = makeChannel()
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return {
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start: ch,
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end: ch,
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asyncStart: ch,
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asyncEnd: ch,
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error: ch,
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trace (fn) {
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return fn()
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}
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}
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}
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export function hasSubscribers () {
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return false
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}
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export default {
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channel,
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tracingChannel,
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hasSubscribers
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}
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