Repository: eslint/eslint
File: lib/linter/code-path-analysis/code-path.js (JavaScript)

Code before:
    /**
     * The initial code path segment. This is the segment that is at the head
     * of the code path.
     * This is a passthrough to the underlying `CodePathState`.
     * @type {CodePathSegment}
     */
    get initialSegment() {
        return this.internal.initialSegment;
    }

    /**
     * Final code path segments. These are the terminal (tail) segments in the
     * code path, which is the combination of `returnedSegments` and `thrownSegments`.
     * All segments in this array are reachable.
     * This is a passthrough to the underlying `CodePathState`.
     * @type {CodePathSegment[]}
     */
    get finalSegments() {
        return this.internal.finalSegments;
    }

    /**
     * Final code path segments that represent `return` statements. This includes
     * both explicit `return` statements and implicit returns, such as the last
     * reachable segment in a function that does not have an explicit `return` as
     * this implicitly returns `undefined`.
     * These segments are also present in `finalSegments`.
     * This is a passthrough to the underlying `CodePathState`.
     * @type {CodePathSegment[]}
     */
    get returnedSegments() {
        return this.internal.returnedForkContext;
    }

    /**
     * Final code path segments that represent `throw` statements.
     * This is a passthrough to the underlying `CodePathState`.
     * These segments are also present in `finalSegments`.
     * @type {CodePathSegment[]}
     */
    get thrownSegments() {
        return this.internal.thrownForkContext;
    }

    /**
     * Tracks the traversal of the code path through each segment. This array
     * starts empty and segments are added or removed as the code path is
     * traversed. This array always ends up empty at the end of a code path
     * traversal. The `CodePathState` uses this to track its progress through
     * the code path.
     * This is a passthrough to the underlying `CodePathState`.

Review comment (suggestion):
It might be better to say something like "Final code path segments that represent normal completion of the code path".

"represent `return` statements" can be misleading as not all code paths can have `return` statements, so restricting this definition to "return" (either explicit or implicit) might imply that only functions can have non-empty `returnedSegments`. Scripts, modules, class field initializers, and class static blocks also have non-empty `returnedSegments`, except in the case when they always throw.

Code after:
    /**
     * The initial code path segment. This is the segment that is at the head
     * of the code path.
     * This is a passthrough to the underlying `CodePathState`.
     * @type {CodePathSegment}
     */
    get initialSegment() {
        return this.internal.initialSegment;
    }

    /**
     * Final code path segments. These are the terminal (tail) segments in the
     * code path, which is the combination of `returnedSegments` and `thrownSegments`.
     * All segments in this array are reachable.
     * This is a passthrough to the underlying `CodePathState`.
     * @type {CodePathSegment[]}
     */
    get finalSegments() {
        return this.internal.finalSegments;
    }

    /**
     * Final code path segments that represent normal completion of the code path.
     * For functions, this means both explicit `return` statements and implicit returns,
     * such as the last reachable segment in a function that does not have an
     * explicit `return` as this implicitly returns `undefined`. For scripts,
     * modules, class field initializers, and class static blocks, this means
     * all lines of code have been executed.
     * These segments are also present in `finalSegments`.
     * This is a passthrough to the underlying `CodePathState`.
     * @type {CodePathSegment[]}
     */
    get returnedSegments() {
        return this.internal.returnedForkContext;
    }

    /**
     * Final code path segments that represent `throw` statements.
     * This is a passthrough to the underlying `CodePathState`.
     * These segments are also present in `finalSegments`.
     * @type {CodePathSegment[]}
     */
    get thrownSegments() {
        return this.internal.thrownForkContext;
    }

    /**
     * Tracks the traversal of the code path through each segment. This array
     * starts empty and segments are added or removed as the code path is
     * traversed. This array always ends up empty at the end of a code path
     * traversal. The `CodePathState` uses this to track its progress through