Is it possible to render name-part affixes in Japanese author names?

CSL Usage
2

CJK names are specially handled in citeproc-js. In the following example, I’ve tried sort-separator and affixes but they don’t work. Only font-weight="bold" attribute works and it can confirm the output is from this element.

As far as I know, this is hard coded in the citeproc-js engine and this is no way to change this without modifying the JavaScript code.

            <name delimiter="・" sort-separator="|" delimiter-precedes-last="never">
              <name-part name="family" font-weight="bold" prefix="[" suffix="]"/>
              <name-part name="given" font-weight="bold" prefix="[" suffix="]"/>
            </name>

<div class="csl-entry"><b>北川</b><b>善太郎</b> 2000「著作権法 100 年記念講演会 著作権制度の未来像」『コピライト』39(465):2–11。</div>