forgo - npm Package Compare versions

Comparing version 0.0.14 to 0.0.15

dist/index.d.ts

@@ -16,3 +16,8 @@ export declare type ForgoRef<T> = {
 };
+export declare type ForgoErrorArgs = {
+    element: ForgoElementArg;
+    error: any;
+};
 export declare type ForgoComponent<TProps extends ForgoElementProps> = {
+    error?: (props: TProps, args: ForgoErrorArgs) => ForgoElement<ForgoComponentCtor<TProps>, TProps>;
     render: (props: TProps, args: ForgoRenderArgs) => ForgoElement<ForgoComponentCtor<TProps>, TProps>;
@@ -46,2 +51,3 @@ unmount?: () => void;
     node: ChildNode;
+    boundary?: ForgoComponent<any> | undefined;
 };
@@ -48,0 +54,0 @@ export declare function rerender(element: ForgoElementArg | undefined, props?: undefined, fullRerender?: boolean): void;

dist/index.js

@@ -30,3 +30,3 @@ "use strict";
 */
-function internalRender(forgoNode, node, pendingAttachStates, fullRerender) {
+function internalRender(forgoNode, node, pendingAttachStates, fullRerender, boundary) {
     // Just a string
@@ -38,3 +38,3 @@ if (!isForgoElement(forgoNode)) {
     else if (typeof forgoNode.type === "string") {
-        return renderDOMElement(forgoNode, node, pendingAttachStates, fullRerender);
+        return renderDOMElement(forgoNode, node, pendingAttachStates, fullRerender, boundary);
     }
@@ -44,3 +44,3 @@ // Custom Component.
     else {
-        return renderCustomComponent(forgoNode, node, pendingAttachStates, fullRerender);
+        return renderCustomComponent(forgoNode, node, pendingAttachStates, fullRerender, boundary);
     }
@@ -88,3 +88,3 @@ }
 */
-function renderDOMElement(forgoElement, node, pendingAttachStates, fullRerender) {
+function renderDOMElement(forgoElement, node, pendingAttachStates, fullRerender, boundary) {
     var _a;
@@ -111,3 +111,3 @@ if (node) {
         attachProps(forgoElement, nodeToBindTo, pendingAttachStates);
-        renderChildNodes(forgoElement, nodeToBindTo, fullRerender);
+        renderChildNodes(forgoElement, nodeToBindTo, fullRerender, boundary);
         return { node: nodeToBindTo };
@@ -122,6 +122,21 @@ }
         attachProps(forgoElement, newElement, pendingAttachStates);
-        renderChildNodes(forgoElement, newElement, fullRerender);
+        renderChildNodes(forgoElement, newElement, fullRerender, boundary);
         return { node: newElement };
     }
 }
+function boundaryFallback(node, props, args, statesToAttach, fullRerender, boundary, exec) {
+    try {
+        return exec();
+    }
+    catch (error) {
+        if (boundary && boundary.error) {
+            const errorArgs = Object.assign(Object.assign({}, args), { error });
+            const newForgoElement = boundary.error(props, errorArgs);
+            return internalRender(newForgoElement, node, statesToAttach, fullRerender, boundary);
+        }
+        else {
+            throw error;
+        }
+    }
+}
 /*
@@ -131,3 +146,3 @@ Render a Custom Component
 */
-function renderCustomComponent(forgoElement, node, pendingAttachStates, fullRerender) {
+function renderCustomComponent(forgoElement, node, pendingAttachStates, fullRerender, boundary) {
     if (node) {
@@ -143,2 +158,3 @@ const state = getExistingForgoState(node);
             const component = ctor(forgoElement.props);
+            boundary = component.error ? component : boundary;
             // Create new component state
@@ -154,6 +170,8 @@ // ... and push it to pendingAttachStates
             const statesToAttach = pendingAttachStates.concat(componentState);
-            // Create an element by rendering the component
-            const newForgoElement = component.render(forgoElement.props, args);
-            // Pass it on for rendering...
-            return internalRender(newForgoElement, node, statesToAttach, fullRerender);
+            return boundaryFallback(node, forgoElement.props, args, statesToAttach, fullRerender, boundary, () => {
+                // Create an element by rendering the component
+                const newForgoElement = component.render(forgoElement.props, args);
+                // Pass it on for rendering...
+                return internalRender(newForgoElement, node, statesToAttach, fullRerender, boundary);
+            });
         }
@@ -172,7 +190,9 @@ // We have compatible state, and this is a rerender
                 const newForgoElement = savedComponentState.component.render(forgoElement.props, args);
-                // Pass it on for rendering...
-                return internalRender(newForgoElement, node, statesToAttach, fullRerender);
+                return boundaryFallback(node, forgoElement.props, args, statesToAttach, fullRerender, boundary, () => {
+                    // Pass it on for rendering...
+                    return internalRender(newForgoElement, node, statesToAttach, fullRerender, boundary);
+                });
             }
             else {
-                return { node };
+                return { node, boundary };
             }
@@ -186,2 +206,3 @@ }
         const component = ctor(forgoElement.props);
+        boundary = component.error ? component : boundary;
         // We'll have to create a new component state
@@ -197,5 +218,8 @@ // ... and push it to pendingAttachStates
         const statesToAttach = pendingAttachStates.concat(componentState);
-        const newForgoElement = component.render(forgoElement.props, args);
         // We have no node to render to yet. So pass undefined for the node.
-        return internalRender(newForgoElement, undefined, statesToAttach, fullRerender);
+        return boundaryFallback(undefined, forgoElement.props, args, statesToAttach, fullRerender, boundary, () => {
+            const newForgoElement = component.render(forgoElement.props, args);
+            // Pass it on for rendering...
+            return internalRender(newForgoElement, undefined, statesToAttach, fullRerender, boundary);
+        });
     }
@@ -216,3 +240,3 @@ }
 */
-function renderChildNodes(forgoElement, parentElement, fullRerender) {
+function renderChildNodes(forgoElement, parentElement, fullRerender, boundary) {
     const { children: forgoChildrenObj } = forgoElement.props;
@@ -236,7 +260,7 @@ const childNodes = parentElement.childNodes;
                     childNodes[forgoChildIndex].nodeType === TEXT_NODE_TYPE) {
-                    internalRender(stringOfPrimitiveNode(forgoChild), childNodes[forgoChildIndex], [], fullRerender);
+                    internalRender(stringOfPrimitiveNode(forgoChild), childNodes[forgoChildIndex], [], fullRerender, boundary);
                 }
                 // But otherwise, don't pass a replacement node. Just insert instead.
                 else {
-                    const { node } = internalRender(stringOfPrimitiveNode(forgoChild), undefined, [], fullRerender);
+                    const { node } = internalRender(stringOfPrimitiveNode(forgoChild), undefined, [], fullRerender, boundary);
                     parentElement.insertBefore(node, childNodes[forgoChildIndex]);
@@ -243,0 +267,0 @@ }

dist/index.js.map

@@ -1,1 +0,1 @@
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package.json

 {
   "name": "forgo",
-  "version": "0.0.14",
+  "version": "0.0.15",
   "main": "./dist",
@@ -5,0 +5,0 @@ "devDependencies": {

README.md

@@ -132,2 +132,35 @@ # forgo
 
+## Error handling
+
+By defining the error() function, Forgo lets you catch errors in child components (at any level, and not necessarily immediate children).
+
+```jsx
+// Here's a component which throws an error.
+function BadComponent() {
+  return {
+    render() {
+      throw new Error("Some error occurred :(");
+    },
+  };
+}
+
+// Parent can catch the error by defining the error() function.
+function Parent(
+  props
+) {
+  return {
+    render() {
+      return <div><BadComponent /></div>;
+    },
+    error(props, args) {
+      return (
+        <p>
+          Error in {props.name}: {args.error.message}
+        </p>
+      );
+    },
+  };
+}
+```
+
 ## Additional Rerender options
@@ -134,0 +167,0 @@

src/index.ts

@@ -33,2 +33,7 @@ /*
 
+export type ForgoErrorArgs = {
+  element: ForgoElementArg;
+  error: any;
+};
+
 /*
@@ -40,2 +45,6 @@ ForgoComponent contains three functions.
 export type ForgoComponent<TProps extends ForgoElementProps> = {
+  error?: (
+    props: TProps,
+    args: ForgoErrorArgs
+  ) => ForgoElement<ForgoComponentCtor<TProps>, TProps>;
   render: (
@@ -148,4 +157,5 @@ props: TProps,
   pendingAttachStates: NodeAttachedComponentState<any>[],
-  fullRerender: boolean
-): { node: ChildNode } {
+  fullRerender: boolean,
+  boundary?: ForgoComponent<any>
+): { node: ChildNode; boundary?: ForgoComponent<any> } {
   // Just a string
@@ -166,3 +176,4 @@ if (!isForgoElement(forgoNode)) {
       pendingAttachStates,
-      fullRerender
+      fullRerender,
+      boundary
     );
@@ -177,3 +188,4 @@ }
       pendingAttachStates,
-      fullRerender
+      fullRerender,
+      boundary
     );
@@ -233,3 +245,4 @@ }
   pendingAttachStates: NodeAttachedComponentState<any>[],
-  fullRerender: boolean
+  fullRerender: boolean,
+  boundary?: ForgoComponent<any>
 ): { node: ChildNode } {
@@ -260,3 +273,8 @@ if (node) {
 
-    renderChildNodes(forgoElement, nodeToBindTo as HTMLElement, fullRerender);
+    renderChildNodes(
+      forgoElement,
+      nodeToBindTo as HTMLElement,
+      fullRerender,
+      boundary
+    );
     return { node: nodeToBindTo };
@@ -270,3 +288,3 @@ } else {
     attachProps(forgoElement, newElement, pendingAttachStates);
-    renderChildNodes(forgoElement, newElement, fullRerender);
+    renderChildNodes(forgoElement, newElement, fullRerender, boundary);
     return { node: newElement };
@@ -276,2 +294,30 @@ }
 
+function boundaryFallback<T>(
+  node: ChildNode | undefined,
+  props: any,
+  args: ForgoRenderArgs,
+  statesToAttach: NodeAttachedComponentState<any>[],
+  fullRerender: boolean,
+  boundary: ForgoComponent<any> | undefined,
+  exec: () => T
+) {
+  try {
+    return exec();
+  } catch (error) {
+    if (boundary && boundary.error) {
+      const errorArgs = { ...args, error };
+      const newForgoElement = boundary.error(props, errorArgs);
+      return internalRender(
+        newForgoElement,
+        node,
+        statesToAttach,
+        fullRerender,
+        boundary
+      );
+    } else {
+      throw error;
+    }
+  }
+}
+
 /*
@@ -285,4 +331,5 @@ Render a Custom Component
   pendingAttachStates: NodeAttachedComponentState<any>[],
-  fullRerender: boolean
-): { node: ChildNode } {
+  fullRerender: boolean,
+  boundary?: ForgoComponent<any>
+): { node: ChildNode; boundary?: ForgoComponent<any> } {
   if (node) {
@@ -301,2 +348,3 @@ const state = getExistingForgoState(node);
       const component = ctor(forgoElement.props);
+      boundary = component.error ? component : boundary;
 
@@ -314,11 +362,22 @@ // Create new component state
 
-      // Create an element by rendering the component
-      const newForgoElement = component.render(forgoElement.props, args);
-
-      // Pass it on for rendering...
-      return internalRender(
-        newForgoElement,
+      return boundaryFallback(
         node,
+        forgoElement.props,
+        args,
         statesToAttach,
-        fullRerender
+        fullRerender,
+        boundary,
+        () => {
+          // Create an element by rendering the component
+          const newForgoElement = component.render(forgoElement.props, args);
+
+          // Pass it on for rendering...
+          return internalRender(
+            newForgoElement,
+            node,
+            statesToAttach,
+            fullRerender,
+            boundary
+          );
+        }
       );
@@ -332,3 +391,3 @@ }
       ) {
-        const args = {
+        const args: ForgoRenderArgs = {
           element: { componentIndex: pendingAttachStates.length },
@@ -350,11 +409,22 @@ };
 
-        // Pass it on for rendering...
-        return internalRender(
-          newForgoElement,
+        return boundaryFallback(
           node,
+          forgoElement.props,
+          args,
           statesToAttach,
-          fullRerender
+          fullRerender,
+          boundary,
+          () => {
+            // Pass it on for rendering...
+            return internalRender(
+              newForgoElement,
+              node,
+              statesToAttach,
+              fullRerender,
+              boundary
+            );
+          }
         );
       } else {
-        return { node };
+        return { node, boundary };
       }
@@ -368,2 +438,3 @@ }
     const component = ctor(forgoElement.props);
+    boundary = component.error ? component : boundary;
 
@@ -381,10 +452,22 @@ // We'll have to create a new component state
     const statesToAttach = pendingAttachStates.concat(componentState);
-    const newForgoElement = component.render(forgoElement.props, args);
 
     // We have no node to render to yet. So pass undefined for the node.
-    return internalRender(
-      newForgoElement,
+    return boundaryFallback(
       undefined,
+      forgoElement.props,
+      args,
       statesToAttach,
-      fullRerender
+      fullRerender,
+      boundary,
+      () => {
+        const newForgoElement = component.render(forgoElement.props, args);
+        // Pass it on for rendering...
+        return internalRender(
+          newForgoElement,
+          undefined,
+          statesToAttach,
+          fullRerender,
+          boundary
+        );
+      }
     );
@@ -410,3 +493,4 @@ }
   parentElement: HTMLElement,
-  fullRerender: boolean
+  fullRerender: boolean,
+  boundary?: ForgoComponent<any>
 ) {
@@ -445,3 +529,4 @@ const { children: forgoChildrenObj } = forgoElement.props;
             [],
-            fullRerender
+            fullRerender,
+            boundary
           );
@@ -455,3 +540,4 @@ }
             [],
-            fullRerender
+            fullRerender,
+            boundary
           );
@@ -458,0 +544,0 @@ parentElement.insertBefore(node, childNodes[forgoChildIndex]);

New alerts

Network access

Supply chain risk

This module accesses the network.

Found 1 instance in 1 package

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Fixed alerts

Network access

Supply chain risk

This module accesses the network.

Found 1 instance in 1 package

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

77378

7.35%

Lines of code

1333

9.35%

Number of lines in readme file

356

10.22%

Worsened metrics

Number of low supply chain risk alerts

5

66.67%

No dependency changes