feat: add preserveTimezones option

src/liquid-options.ts

@@ -37,6 +37,8 @@ export interface LiquidOptions {
   outputDelimiterLeft?: string;
   /** The right delimiter for liquid outputs. **/
   outputDelimiterRight?: string;
+  /** Whether input strings to date filter preserve the given timezone **/
+  preserveTimezones?: boolean;
   /** Whether `trim*Left`/`trim*Right` is greedy. When set to `true`, all consecutive blank characters including `\n` will be trimed regardless of line breaks. Defaults to `true`. */
   greedy?: boolean;
   /** `fs` is used to override the default file-system module with a custom implementation. */
@@ -69,6 +71,7 @@ export interface NormalizedFullOptions extends NormalizedOptions {
   tagDelimiterRight: string;
   outputDelimiterLeft: string;
   outputDelimiterRight: string;
+  preserveTimezones: boolean;
   greedy: boolean;
   globals: object;
   keepOutputType: boolean;
@@ -89,6 +92,7 @@ export const defaultOptions: NormalizedFullOptions = {
   tagDelimiterRight: '%}',
   outputDelimiterLeft: '{{',
   outputDelimiterRight: '}}',
+  preserveTimezones: false,
   strictFilters: false,
   strictVariables: false,
   lenientIf: false,