Repository: ionic-team/ionic-framework
File: core/src/components/searchbar/searchbar.tsx (TypeScript)

Code before:
            onBlur={this.onBlur}
            onFocus={this.onFocus}
            minLength={this.minlength}
            maxLength={this.maxlength}
            placeholder={this.placeholder}
            type={this.type}
            value={this.getValue()}
            autoCapitalize={autocapitalize === 'default' ? undefined : autocapitalize}
            autoComplete={this.autocomplete}
            autoCorrect={this.autocorrect}
            spellcheck={this.spellcheck}
            {...this.inheritedAttributes}
          />

          {(theme === 'md' || theme === 'ionic') && cancelButton}

          {theme !== 'ionic' || this.searchIcon !== undefined ? (
            <ion-icon
              aria-hidden="true"
              icon={searchbarSearchIcon}
              lazy={false}
              class="searchbar-search-icon"
            ></ion-icon>
          ) : null}

          {theme !== 'ionic' || this.shouldShowClearButton() !== undefined ? (
            <button
              aria-label="reset"
              type="button"
              no-blur
              class="searchbar-clear-button"
              onPointerDown={(ev) => {
                /**
                 * This prevents mobile browsers from
                 * blurring the input when the clear
                 * button is activated.
                 */
                ev.preventDefault();
              }}
              onClick={() => this.onClearInput(true)}
            >
              <ion-icon
                aria-hidden="true"
                icon={searchbarClearIcon}
                lazy={false}
                class="searchbar-clear-icon"
              ></ion-icon>
            </button>
          ) : null}
        </div>
        {theme === 'ios' && cancelButton}

Review comment (suggestion):
There's no need to check for the theme here. Any additional checks should be placed within `shouldShowClearButton`. Plus `shouldShowClearButton` returns a `boolean` so  this `undefined` is not valid.

```suggestion
          {this.shouldShowClearButton() ? (
```

Code after:
        })}
      >
        <div class="searchbar-input-container">
          <input
            aria-label="search text"
            disabled={this.disabled}
            ref={(el) => (this.nativeInput = el)}
            class="searchbar-input"
            inputMode={this.inputmode}
            enterKeyHint={this.enterkeyhint}
            name={this.name}
            onInput={this.onInput}
            onChange={this.onChange}
            onBlur={this.onBlur}
            onFocus={this.onFocus}
            minLength={this.minlength}
            maxLength={this.maxlength}
            placeholder={this.placeholder}
            type={this.type}
            value={this.getValue()}
            autoCapitalize={autocapitalize === 'default' ? undefined : autocapitalize}
            autoComplete={this.autocomplete}
            autoCorrect={this.autocorrect}
            spellcheck={this.spellcheck}
            {...this.inheritedAttributes}
          />

          {(theme === 'md' || theme === 'ionic') && cancelButton}

          {this.shouldShowSearchIcon() && (
            <ion-icon
              aria-hidden="true"
              icon={searchbarSearchIcon}
              lazy={false}
              class="searchbar-search-icon"
            ></ion-icon>
          )}

          {this.shouldShowClearButton() && (
            <button
              aria-label="reset"
              type="button"
              no-blur
              class="searchbar-clear-button"
              onPointerDown={(ev) => {
                /**
                 * This prevents mobile browsers from
                 * blurring the input when the clear
                 * button is activated.
                 */
                ev.preventDefault();