Method applyScope

packages/compiler/src/shadow_css.ts:674–685

(shallowPart: string)

      .map((deepParts) => {
        const [shallowPart, ...otherParts] = deepParts;
        const applyScope = (shallowPart: string) => {
          if (this._selectorNeedsScoping(shallowPart, scopeSelector)) {
            return this._applySelectorScope({
              selector: shallowPart,
              scopeSelector,
              hostSelector,
              isParentSelector,
            });
          } else {
            return shallowPart;
          }
        };
        return [applyScope(shallowPart), ...otherParts].join(' ');
      })
      .join(', ');