Make plugin info static

so it can be accessed before a plugin is instantiated

packages/jspsych/src/JsPsych.ts

@@ -504,13 +504,17 @@ export class JsPsych {
     this.current_trial = trial;
     this.current_trial_finished = false;
 
-    // instantiate the plugin for this trial
-    const info = trial.type.info;
-    trial.type = new trial.type(this);
-
     // process all timeline variables for this trial
     this.evaluateTimelineVariables(trial);
 
+    // instantiate the plugin for this trial
+    trial.type = {
+      // this is a hack to internally keep the old plugin object structure and prevent touching more
+      // of the core jspsych code
+      ...autoBind(new trial.type(this)),
+      info: trial.type.info,
+    };
+
     // evaluate variables that are functions
     this.evaluateFunctionParameters(trial);
 

packages/jspsych/src/modules/plugins.ts

@@ -140,13 +140,10 @@ export interface PluginInfo {
 }
 
 export interface JsPsychPlugin<I extends PluginInfo> {
-  info: I;
   trial(display_element: HTMLElement, trial: TrialType<I>): void;
 }
 
 export type TrialType<I extends PluginInfo> = InferredParameters<I["parameters"]> &
   UniversalPluginParameters;
 
-export type PluginParameters<P extends JsPsychPlugin<any>> = InferredParameters<
-  P["info"]["parameters"]
->;
+export type PluginParameters<I extends PluginInfo> = InferredParameters<I["parameters"]>;

packages/jspsych/tests/core/functions-as-parameters.test.ts

@@ -166,7 +166,7 @@ describe("nested parameters as functions", () => {
     };
 
     class FunctionTestPlugin implements JsPsychPlugin<typeof info> {
-      info = info;
+      static info = info;
 
       constructor(private jsPsych: JsPsych) {}
 

packages/plugin-html-keyboard-response/src/index.ts

@@ -67,7 +67,7 @@ type Info = typeof info;
  *
  **/
 class HtmlKeyboardResponsePlugin implements JsPsychPlugin<Info> {
-  info = info;
+  static info = info;
 
   constructor(private jsPsych: JsPsych) {}