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-rw-r--r--ext/mixed/js/audio.js9
-rw-r--r--ext/mixed/js/display.js2
2 files changed, 7 insertions, 4 deletions
diff --git a/ext/mixed/js/audio.js b/ext/mixed/js/audio.js
index 76a3e7da..47db5c75 100644
--- a/ext/mixed/js/audio.js
+++ b/ext/mixed/js/audio.js
@@ -114,8 +114,11 @@ function audioGetFromUrl(url, willDownload) {
async function audioGetFromSources(expression, sources, optionsContext, willDownload, cache=null) {
const key = `${expression.expression}:${expression.reading}`;
- if (cache !== null && hasOwn(cache, expression)) {
- return cache[key];
+ if (cache !== null) {
+ const cacheValue = cache.get(expression);
+ if (typeof cacheValue !== 'undefined') {
+ return cacheValue;
+ }
}
for (let i = 0, ii = sources.length; i < ii; ++i) {
@@ -133,7 +136,7 @@ async function audioGetFromSources(expression, sources, optionsContext, willDown
}
const result = {audio, url, source};
if (cache !== null) {
- cache[key] = result;
+ cache.set(key, result);
}
return result;
} catch (e) {
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index b18e275d..5b868df3 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -32,7 +32,7 @@ class Display {
this.index = 0;
this.audioPlaying = null;
this.audioFallback = null;
- this.audioCache = {};
+ this.audioCache = new Map();
this.styleNode = null;
this.eventListeners = [];