@bugsnag/core-performance/dist/span-context.js

Core performance client

function spanContextEquals(span1, span2) {
    if (span1 === span2)
        return true;
    if (span1 !== undefined && span2 !== undefined) {
        return span1.id === span2.id && span1.traceId === span2.traceId;
    }
    return false;
}
class DefaultSpanContextStorage {
    constructor(backgroundingListener, contextStack = []) {
        this.isInForeground = true;
        this.onBackgroundStateChange = (state) => {
            this.isInForeground = state === 'in-foreground';
            // clear the context stack regardless of the new background state
            // since spans are only valid if they start and end while the app is in the foreground
            this.contextStack.length = 0;
        };
        this.contextStack = contextStack;
        backgroundingListener.onStateChange(this.onBackgroundStateChange);
    }
    *[Symbol.iterator]() {
        for (let i = this.contextStack.length - 1; i >= 0; --i) {
            yield this.contextStack[i];
        }
    }
    push(context) {
        if (context.isValid() && this.isInForeground) {
            this.contextStack.push(context);
        }
    }
    pop(context) {
        if (spanContextEquals(context, this.current)) {
            this.contextStack.pop();
        }
        this.removeClosedContexts();
    }
    get first() {
        this.removeClosedContexts();
        return this.contextStack.length > 0
            ? this.contextStack[0]
            : undefined;
    }
    get current() {
        this.removeClosedContexts();
        return this.contextStack.length > 0
            ? this.contextStack[this.contextStack.length - 1]
            : undefined;
    }
    removeClosedContexts() {
        while (this.contextStack.length > 0 &&
            this.contextStack[this.contextStack.length - 1].isValid() === false) {
            this.contextStack.pop();
        }
    }
}

export { DefaultSpanContextStorage, spanContextEquals };