fix a lot of broken stuff:

backend/embed.ts

@@ -1,12 +1,13 @@
-import { AssFile, AssUser, EmbedTemplate, PreparedEmbed } from "ass"
-import { TemplateExecutor } from "./templates/executor";
+import { AssFile, AssUser, EmbedTemplate, PreparedEmbed } from 'ass'
+
+import { TemplateExecutor } from './templates/executor.js';
 
 let executor = TemplateExecutor.createExecutor(); 
 
 export const DEFAULT_EMBED: EmbedTemplate = {
-    sitename:    "ass",
-    title:       "",
-    description: ""
+    sitename:    'ass',
+    title:       '',
+    description: ''
 };
 
 // ensures a template is valid

backend/templates/command.ts

@@ -1,5 +1,6 @@
 import { TemplateCommandOp, TemplateCommandSchema } from 'ass';
-import { TemplateContext } from './executor';
+
+import { TemplateContext } from './executor.js';
 
 export type TemplateCommand<N extends string, S extends TemplateCommandSchema> = {
     readonly name:   N;

backend/templates/error.ts

@@ -1,4 +1,4 @@
-import { TemplateSourceRange } from "ass";
+import { TemplateSourceRange } from 'ass';
 
 export class TemplateError extends Error {
     range?: TemplateSourceRange;

backend/templates/executor.ts

@@ -1,6 +1,7 @@
 import { AssFile, AssUser, TemplateCommandOp, TemplateCommandSchema, TemplateOp } from 'ass';
-import { TemplateCommand } from './command';
-import { TemplateError } from './error';
+
+import { TemplateCommand } from './command.js';
+import { TemplateError } from './error.js';
 
 export class TemplateContext {
     public readonly owner: TemplateExecutor;

backend/templates/parser.ts

@@ -2,7 +2,7 @@ import { TemplateOp, TemplateSource } from 'ass';
 
 import fs from 'fs';
 
-import { TemplateSyntaxError } from './error';
+import { TemplateSyntaxError } from './error.js';
 
 enum TokenType {
     T_OPEN, T_CLOSE,