Struct ShimBundle 

pub struct ShimBundle(pub Vec<ShimEntry>);

The shim bundle for a JS context (P4b: injectable, defaults to the embedded set).

• Native / CLI keeps the embedded default — reproducibility matters; a load test’s semantics must not change because someone dropped a different pm.js beside the binary.
• The web client supplies its own — a pm.* fix ships as a JS asset with the web app: no wasm rebuild, no Tropel release.

Tuple Fields

0: Vec<ShimEntry>

Implementations

impl ShimBundle

pub fn from_shims(shims: &[Shim]) -> Self

Build a bundle from an explicit shim list, in the order given.

pub fn render(&self) -> String

Render the bundle to source text, concatenated with section headers.

This is the ONLY thing that turns a bundle into JS — the bytecode path compiles this string too, so there is no second, hand-maintained concatenation that can drift out of step with the entry list (W2 line 182: that drift is what left bru.js compiled but never evaluated).

impl ShimBundle

P-B + TR-501: only materialise shims a run can actually use.

Two independent, individually-safe layers:

1. Format ([format_shims]) — what the input format can name at all.
2. Content — a conservative keyword scan of the input file for the two optional libraries. The scan reads the WHOLE input file, not just the script text, so it is deliberately over-inclusive: a Postman collection whose URL happens to contain crypto. pulls cryptojs it does not need, which costs memory. The reverse — scanning only the extracted scripts and missing one — costs a ReferenceError.

pub fn for_format(format: &str, input: &[u8]) -> Self

Build a bundle for a known input format, gated further by a keyword scan of the input. An unrecognised format yields the full default.

pub fn for_format_path(format: &str, path: &Path) -> Self

Self::for_format against a file on disk. Reads the file once per scenario (the bundle is then shared by every VU via Arc); an unreadable file falls back to the full default bundle, since a bundle cannot be narrowed on evidence that could not be read.

pub fn from_script(script: &[u8]) -> Self

Content-only gating, with no format knowledge: the full shim set minus lodash/cryptojs when the input never names them. This is what for_format degrades to for an unknown format, and what the measurement harness uses as the “gated” comparison point.

Trait Implementations

impl Default for ShimBundle

fn default() -> Self

Returns the “default value” for a type.