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Avoid upgrading template if no hostProps, for better perf. #5520

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merged 3 commits into from
Apr 13, 2019
Merged

Avoid upgrading template if no hostProps, for better perf. #5520

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Avoid upgrading template if no hostProps, for better perf.
kevinpschaaf Apr 10, 2019
f1a9d4f
Simplify
kevinpschaaf Apr 10, 2019
c7eb7c1
[ci skip] Add comment
kevinpschaaf Apr 13, 2019
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5 changes: 4 additions & 1 deletion lib/utils/templatize.js
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Original file line number Diff line number Diff line change
Expand Up @@ -364,7 +364,7 @@ function createTemplatizerClass(template, templateInfo, options) {
*/
function addPropagateEffects(template, templateInfo, options) {
let userForwardHostProp = options.forwardHostProp;
if (userForwardHostProp) {
if (userForwardHostProp && templateInfo.hasHostProps) {
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Let's add a comment here or perhaps just in the doc for the function explaining what this does so it's clear why it's only related to hostProps.

// Provide data API and property effects on memoized template class
let klass = templateInfo.templatizeTemplateClass;
if (!klass) {
Expand Down Expand Up @@ -423,6 +423,9 @@ function addNotifyEffects(klass, template, templateInfo, options) {
}
if (options.forwardHostProp && template.__dataHost) {
for (let hprop in hostProps) {
if (!templateInfo.hasHostProps) {
templateInfo.hasHostProps = true;
}
klass.prototype._addPropertyEffect(hprop,
klass.prototype.PROPERTY_EFFECT_TYPES.NOTIFY,
{fn: createNotifyHostPropEffect()});
Expand Down