How to use the @tarojs/shared.toCamelCase function in @tarojs/shared

public setProperty (propertyName: string, value?: string | null) {
    propertyName = toCamelCase(propertyName)
    if (isUndefined(value)) {
      return
    }

    if (value === null || value === '') {
      this.removeProperty(propertyName)
    } else {
      this[propertyName] = value
    }
  }

public getPropertyValue (propertyName: string) {
    propertyName = toCamelCase(propertyName)
    const value = this[propertyName]
    if (!value) {
      return ''
    }

    return value
  }
}

public removeProperty (propertyName: string): string {
    propertyName = toCamelCase(propertyName)
    if (!this._usedStyleProp.has(propertyName)) {
      return ''
    }

    const value = this[propertyName]
    this[propertyName] = ''
    this._usedStyleProp.delete(propertyName)
    return value
  }