How to use the pg/lib/utils.prepareValue function in pg

expect(pgp.as.format('$1^', 'one')).toBe('one');
        expect(pgp.as.format('$1:raw', 'one')).toBe('one');

        expect(pgp.as.format('$1', ['one'])).toBe('\'one\'');
        expect(pgp.as.format('$1^', ['one'])).toBe('one');
        expect(pgp.as.format('$1:raw', ['one'])).toBe('one');

        expect(pgp.as.format('$1, $1', 'one')).toBe('\'one\', \'one\'');

        expect(pgp.as.format('$1$1', 'one')).toBe('\'one\'\'one\'');
        expect(pgp.as.format('$1^$1^', 'one')).toBe('oneone');

        expect(pgp.as.format('$1', [userObj])).toBe(pgp.as.text(JSON.stringify(userObj)));
        expect(pgp.as.format('$1^', [userObj])).toBe(JSON.stringify(userObj));

        expect(pgp.as.format('$1, $2, $3, $4', [true, -12.34, 'text', dateSample])).toBe('true, -12.34, \'text\', \'' + $pgUtils.prepareValue(dateSample) + '\'');

        expect(pgp.as.format('$1 $1, $2 $2, $1', [1, 'two'])).toBe('1 1, \'two\' \'two\', 1'); // test for repeated variables;

        expect(pgp.as.format('Test: $1', ['don\'t break quotes!'])).toBe('Test: \'don\'\'t break quotes!\'');

        // testing with lots of variables;
        let source = '', dest = '';
        const params = [];
        for (let i = 1; i <= 1000; i++) {
            source += '$' + i;
            dest += i;
            params.push(i);
        }
        expect(pgp.as.format(source, params)).toBe(dest);

        // testing various cases with many variables:

it('must correctly inject raw-text variables', () => {

        expect(pgp.as.format('${name},${name^},${name},${name^}', {
            name: 'me'
        })).toBe('\'me\',me,\'me\',me');

        expect(pgp.as.format('$1,$1^,$1,$1^', 'hello')).toBe('\'hello\',hello,\'hello\',hello');

        expect(pgp.as.format('$1,$2,$1^,$2^', ['one', 'two']))
            .toBe('\'one\',\'two\',one,two');

        expect(pgp.as.format('$1^ $2^ $1', ['Don\'t break', 'this']))
            .toBe('Don\'t break this \'Don\'\'t break\'');

        expect(pgp.as.format('$1^,$1', dateSample))
            .toBe($pgUtils.prepareValue(dateSample) + ',\'' + $pgUtils.prepareValue(dateSample) + '\'');

    });

it('must correctly convert any date', () => {
        expect(pgp.as.date()).toBe('null');
        expect(pgp.as.date(null)).toBe('null');
        expect(pgp.as.date(dateSample)).toBe('\'' + $pgUtils.prepareValue(dateSample) + '\'');
        expect(pgp.as.date(dateSample, true)).toBe($pgUtils.prepareValue(dateSample));
    });