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Convert files in the src/display/-folder to use optional chaining where possible

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By using optional chaining, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining, it's possible to reduce unnecessary code-repetition in many cases.
Note that these changes also reduce the size of the *built* `pdf.js` file, when `SKIP_BABEL == true` is set, and for the `MOZCENTRAL` build-target that result in a `0.1%` filesize reduction from a simple and mostly mechanical code change.
This commit is contained in:
Jonas Jenwald 2020-11-06 14:36:16 +01:00
parent e3851a6765
commit 1dad255784
8 changed files with 19 additions and 41 deletions
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4
src/display/fetch_stream.js
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@ -35,7 +35,7 @@ function createFetchOptions(headers, withCredentials, abortController) {
return {
method: "GET",
headers,
signal: abortController && abortController.signal,
signal: abortController?.signal,
mode: "cors",
credentials: withCredentials ? "include" : "same-origin",
redirect: "follow",
@ -251,7 +251,7 @@ class PDFFetchStreamRangeReader {
this._reader = response.body.getReader();
})
.catch(reason => {
if (reason && reason.name === "AbortError") {
if (reason?.name === "AbortError") {
return;
}
throw reason;