/**

* Copyright 2004-present Facebook. All Rights Reserved.

*

* @emails oncall+ads_integration_management

* @flow strict-local

* @format

*/

'use strict';

const MAX_ASCII_CHARACTER = 127;

/**

* Serializes strings with non-ASCII characters to their Unicode escape

* sequences (eg. \u2022), to avoid hitting this lint rule:

* "Source code should only include printable US-ASCII bytes"

*/

const NonASCIIStringSnapshotSerializer = {

test(val: mixed): boolean {

if (typeof val !== 'string') {

return false;

}

for (let i = 0; i < val.length; i++) {

if (val.charCodeAt(i) > MAX_ASCII_CHARACTER) {

return true;

}

}

return false;

},

print: (val: string): string => {

return (

'"' +

val

.split('')

.map(char => {

const code = char.charCodeAt(0);

return code > MAX_ASCII_CHARACTER

? '\\u' + code.toString(16).padStart(4, '0')

: char;

})

.join('')

// Keep the same behaviour as Jest's regular string snapshot

// serialization, which escapes double quotes.

.replace(/"/g, '\\"') +

'"'

);

},

};

module.exports = NonASCIIStringSnapshotSerializer;