rustdoc js: add rustdoc.ScrapedLoc type

Author: lolbinarycat

src/librustdoc/html/static/js/rustdoc.d.ts

@@ -496,6 +496,8 @@ declare namespace rustdoc {
  * Single element in the data-locs field of a scraped example.
  * First field is the start and end char index,
  * other fields seem to be unused.
+ *
+ * generated by `render_call_locations` in `render/mod.rs`.
  */
  type ScrapedLoc = [[number, number], string, string]
 }

src/librustdoc/html/static/js/scrape-examples.js

@@ -127,7 +127,9 @@
  * @param {boolean} isHidden
  */
  function setupLoc(example, isHidden) {
- const locs = example.locs = JSON.parse(nonnull(nonnull(example.attributes.getNamedItem("data-locs")).textContent));
+ const locs_str = example.attributes.getNamedItem("data-locs")).textContent;
+ const locs = example.locs =
+ JSON.parse(nonnull(nonnull(locs_str));
  // Start with the first example in view
  scrollToLoc(example, locs[0][0], isHidden);
  }