WordPress at a glance
filter is not described

pre_load_script_translations filter-hook . WP 5.0.2

Pre-filters script translations for the given file, script handle and text domain.

Returning a non-null value allows to override the default logic, effectively short-circuiting the function.

Usage

add_filter( 'pre_load_script_translations', 'filter_function_name_1869', 10, 4 );
function filter_function_name_1869( $translations, $file, $handle, $domain ){
	// filter...

	return $translations;
}
$translations(string/false)
JSON-encoded translation data.
Default: null
$file(string/false)
Path to the translation file to load. False if there isn't one.
$handle(string)
Name of the script to register a translation domain to.
$domain(string)
The text domain.

Where the hook is called

load_script_translations()
pre_load_script_translations
wp-includes/l10n.php 1032
$translations = apply_filters( 'pre_load_script_translations', null, $file, $handle, $domain );

Where the hook is used (in WP core)

Does not used.