First select()

in example/src/theme-builder/theme-builder.ts [74:102]
27 lines of code
4 McCabe index (conditional complexity)

                First select (No Unit) option for the unit and then you can type any string into the value field. 
                And you can use custom properties as usual like <b>var(--mynah-sizing-1)</b> and the sizing values goes from <b>1 to 18</b>.
            </p>
            `
        );

        this.fillInputWrapper();

        const uploadThemeConfigFilePicker = document.createElement('input');
        uploadThemeConfigFilePicker.setAttribute('type', 'file');
        uploadThemeConfigFilePicker.setAttribute('accept', '.mynahuitc');
        uploadThemeConfigFilePicker.classList.add('hidden');
        uploadThemeConfigFilePicker.classList.add('config-operation');
        uploadThemeConfigFilePicker.classList.add('fill-state-always');
        uploadThemeConfigFilePicker.addEventListener('change', async () => {
            const file = uploadThemeConfigFilePicker.files?.item(0);
            if (file) {
                const text = await file.text();
                try {
                    this.currentConfig = JSON.parse(text);
                    this.inputsWrapper.innerHTML = '';
                    this.fillInputWrapper();
                    this.buildCssValues();
                    uploadThemeConfigFilePicker.value = '';
                } catch (err) {
                    console.warn("Coudln't read the JSON content");
                }
            }
        });