No ext-locale package available in ExtJS 7.3 - extjs

Question

For some weird reason, I'm getting this error:
Cannot satisfy requirements for "ext-locale"! [ERR] The following
versions cannot be satisfied: [ERR] App: ext-locale (No
matches!) [ERR] Cannot resolve package requirements
Per official instructions, I added the requires to app.json
"classic": {
"requires": [
"ext-locale"
]
},
I'm using the universal template:
"template": "universalclassicmodern"
I looked at #sencha/ext-classic/
but I can't see a locale directory there.
Do I have to manually install the package via npm?

Answer 1

If you use the Classic or Modern template:
Try to change the code like this.
Open app.json file, in global requires.
"requires": [
"font-awesome",
"locale"
],
"locale":"zh_CN", //!!!Your localization parameters
Configure specific build options
"production": {
"requires": [
"locale"
],
"locale":"zh_CN", //!!!Your localization parameters
...
},
"testing": {
"requires": [
"locale"
],
"locale":"zh_CN", //!!!Your localization parameters
...
},
"development": {
"requires": [
"locale"
],
"locale":"zh_CN", //!!!Your localization parameters
...
},
If you use the universal template,Try to change the code like this.Open app.json file, in global requires.
"requires": [
"font-awesome",
"locale"
],
"locale": "zh_CN", //!!!Your localization parameters
Then according to the official documentation, add "ext-locale" to the "requires" under the Classic and Modern nodes
"classic": {
"requires": [
"ext-locale"
],
"locale": "zh_CN", //!!!Your localization parameters
.....
},
"modern": {
"requires": [
"ext-locale"
],
"locale": "zh_CN", //!!!Your localization parameters
...
}

Answer 2

I finally found the solution:
If you install ExtJS via npm, like:
ext-gen app -a -t universalclassicmodern -n myApp
You'll need to install localization packages separately with:
npm i #sencha/ext-classic-locale
npm i #sencha/ext-modern-locale
And in app.json, you only need these settings regarding localization:
"locale": "es", // <-- Your locale here
"requires": [
"ext-locale"
],...
Seems that you don't need to specify the locale for each build/tookit.
This guide should be updated and explain it:
https://docs.sencha.com/extjs/7.4.0/guides/core_concepts/localization.html