TanStack · lachlancollins · Apr 17, 2025 · Jan 5, 2025 · Jan 6, 2025 · Jan 10, 2025
diff --git a/examples/svelte/array/.gitignore b/examples/svelte/array/.gitignore
@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
diff --git a/examples/svelte/array/README.md b/examples/svelte/array/README.md
@@ -0,0 +1,6 @@
+# Example
+
+To run this example:
+
+- `npm install`
+- `npm run dev`
diff --git a/examples/svelte/array/index.html b/examples/svelte/array/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Vite + Svelte + TS</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/main.ts"></script>
+  </body>
+</html>
diff --git a/examples/svelte/array/package.json b/examples/svelte/array/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "@tanstack/form-example-svelte-array",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@tanstack/svelte-form": "^1.0.0"
+  },
+  "devDependencies": {
+    "@sveltejs/vite-plugin-svelte": "^5.0.3",
+    "@tsconfig/svelte": "^5.0.4",
+    "svelte": "^5.27.2",
+    "typescript": "5.8.2",
+    "vite": "^6.2.6"
+  }
+}
diff --git a/examples/svelte/array/src/App.svelte b/examples/svelte/array/src/App.svelte
@@ -0,0 +1,55 @@
+<script lang="ts">
+  import { createForm } from '@tanstack/svelte-form'
+
+  const form = createForm(() => ({
+    defaultValues: {
+      people: [] as Array<{ age: number; name: string }>,
+    },
+    onSubmit: ({ value }) => alert(JSON.stringify(value)),
+  }))
+</script>
+
+<form
+  id="form"
+  onsubmit={(e) => {
+    e.preventDefault()
+    e.stopPropagation()
+    form.handleSubmit()
+  }}
+>
+  <h1>TanStack Form - Svelte Demo</h1>
+
+  <form.Field name="people">
+    {#snippet children(field)}
+      <div>
+        {#each field.state.value as person, i}
+          <form.Field name={`people[${i}].name`}>
+            {#snippet children(subField)}
+              <div>
+                <label>
+                  <div>Name for person {i}</div>
+                  <input
+                    value={person.name}
+                    oninput={(e: Event) => {
+                      const target = e.target as HTMLInputElement
+                      subField.handleChange(target.value)
+                    }}
+                  />
+                </label>
+              </div>
+            {/snippet}
+          </form.Field>
+        {/each}
+
+        <button
+          onclick={() => field.pushValue({ name: '', age: 0 })}
+          type="button"
+        >
+          Add person
+        </button>
+      </div>
+    {/snippet}
+  </form.Field>
+
+  <button type="submit"> Submit </button>
+</form>
diff --git a/examples/svelte/array/src/main.ts b/examples/svelte/array/src/main.ts
@@ -0,0 +1,8 @@
+import { mount } from 'svelte'
+import App from './App.svelte'
+
+const app = mount(App, {
+  target: document.getElementById('app')!,
+})
+
+export default app
diff --git a/examples/svelte/array/src/vite-env.d.ts b/examples/svelte/array/src/vite-env.d.ts
@@ -0,0 +1,2 @@
+/// <reference types="svelte" />
+/// <reference types="vite/client" />
diff --git a/examples/svelte/array/svelte.config.js b/examples/svelte/array/svelte.config.js
@@ -0,0 +1,7 @@
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte'
+
+export default {
+  // Consult https://svelte.dev/docs#compile-time-svelte-preprocess
+  // for more information about preprocessors
+  preprocess: vitePreprocess(),
+}
diff --git a/examples/svelte/array/tsconfig.json b/examples/svelte/array/tsconfig.json
@@ -0,0 +1,20 @@
+{
+  "extends": "@tsconfig/svelte/tsconfig.json",
+  "compilerOptions": {
+    "target": "ESNext",
+    "useDefineForClassFields": true,
+    "module": "ESNext",
+    "resolveJsonModule": true,
+    /**
+     * Typecheck JS in `.svelte` and `.js` files by default.
+     * Disable checkJs if you'd like to use dynamic types in JS.
+     * Note that setting allowJs false does not prevent the use
+     * of JS in `.svelte` files.
+     */
+    "allowJs": true,
+    "checkJs": true,
+    "isolatedModules": true,
+    "moduleDetection": "force"
+  },
+  "include": ["src/**/*.ts", "src/**/*.js", "src/**/*.svelte"]
+}
diff --git a/examples/svelte/array/vite.config.ts b/examples/svelte/array/vite.config.ts
@@ -0,0 +1,7 @@
+import { defineConfig } from 'vite'
+import { svelte } from '@sveltejs/vite-plugin-svelte'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [svelte()],
+})
diff --git a/examples/svelte/simple/.gitignore b/examples/svelte/simple/.gitignore
@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
diff --git a/examples/svelte/simple/README.md b/examples/svelte/simple/README.md
@@ -0,0 +1,6 @@
+# Example
+
+To run this example:
+
+- `npm install`
+- `npm run dev`
diff --git a/examples/svelte/simple/index.html b/examples/svelte/simple/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Vite + Svelte + TS</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/main.ts"></script>
+  </body>
+</html>
diff --git a/examples/svelte/simple/package.json b/examples/svelte/simple/package.json
@@ -0,0 +1,21 @@
+{
+  "name": "@tanstack/form-example-svelte-simple",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@tanstack/svelte-form": "^1.0.0"
+  },
+  "devDependencies": {
+    "@sveltejs/vite-plugin-svelte": "^5.0.3",
+    "@tsconfig/svelte": "^5.0.4",
+    "svelte": "^5.27.2",
+    "typescript": "5.8.2",
+    "vite": "^6.2.6"
+  }
+}
diff --git a/examples/svelte/simple/src/App.svelte b/examples/svelte/simple/src/App.svelte
@@ -0,0 +1,148 @@
+<script lang="ts">
+  import { createForm } from '@tanstack/svelte-form'
+  import FieldInfo from './FieldInfo.svelte'
+
+  const form = createForm(() => ({
+    defaultValues: {
+      firstName: '',
+      lastName: '',
+      employed: false,
+      jobTitle: '',
+    },
+    onSubmit: async ({ value }) => {
+      // Do something with form data
+      alert(JSON.stringify(value))
+    },
+  }))
+</script>
+
+<form
+  id="form"
+  onsubmit={(e) => {
+    e.preventDefault()
+    e.stopPropagation()
+    form.handleSubmit()
+  }}
+>
+  <h1>TanStack Form - Svelte Demo</h1>
+
+  <form.Field
+    name="firstName"
+    validators={{
+      onChange: ({ value }) =>
+        value.length < 3 ? 'Not long enough' : undefined,
+      onChangeAsyncDebounceMs: 500,
+      onChangeAsync: async ({ value }) => {
+        await new Promise((resolve) => setTimeout(resolve, 1000))
+        return value.includes('error') && 'No "error" allowed in first name'
+      },
+    }}
+  >
+    {#snippet children(field)}
+      <div>
+        <label for={field.name}>First Name</label>
+        <input
+          id={field.name}
+          type="text"
+          placeholder="First Name"
+          value={field.state.value}
+          onblur={() => field.handleBlur()}
+          oninput={(e: Event) => {
+            const target = e.target as HTMLInputElement
+            field.handleChange(target.value)
+          }}
+        />
+        <FieldInfo {field} />
+      </div>
+    {/snippet}
+  </form.Field>
+  <form.Field
+    name="lastName"
+    validators={{
+      onChange: ({ value }) =>
+        value.length < 3 ? 'Not long enough' : undefined,
+    }}
+  >
+    {#snippet children(field)}
+      <div>
+        <label for={field.name}>Last Name</label>
+        <input
+          id={field.name}
+          type="text"
+          placeholder="Last Name"
+          value={field.state.value}
+          onblur={() => field.handleBlur()}
+          oninput={(e: Event) => {
+            const target = e.target as HTMLInputElement
+            field.handleChange(target.value)
+          }}
+        />
+        <FieldInfo {field} />
+      </div>
+    {/snippet}
+  </form.Field>
+  <form.Field name="employed">
+    {#snippet children(field)}
+      <div>
+        <label for={field.name}>Employed?</label>
+        <input
+          oninput={() => field.handleChange(!field.state.value)}
+          checked={field.state.value}
+          onblur={() => field.handleBlur()}
+          id={field.name}
+          type="checkbox"
+        />
+      </div>
+      {#if field.state.value}
+        <form.Field
+          name="jobTitle"
+          validators={{
+            onChange: ({ value }) =>
+              value.length === 0 ? 'If you have a job, you need a title' : null,
+          }}
+        >
+          {#snippet children(field)}
+            <div>
+              <label for={field.name}>Job Title</label>
+              <input
+                type="text"
+                id={field.name}
+                placeholder="Job Title"
+                value={field.state.value}
+                onblur={field.handleBlur}
+                oninput={(e: Event) => {
+                  const target = e.target as HTMLInputElement
+                  field.handleChange(target.value)
+                }}
+              />
+              <FieldInfo {field} />
+            </div>
+          {/snippet}
+        </form.Field>
+      {/if}
+    {/snippet}
+  </form.Field>
+  <div>
+    <form.Subscribe
+      selector={(state) => ({
+        canSubmit: state.canSubmit,
+        isSubmitting: state.isSubmitting,
+      })}
+    >
+      {#snippet children({ canSubmit, isSubmitting })}
+        <button type="submit" disabled={!canSubmit}>
+          {isSubmitting ? 'Submitting' : 'Submit'}
+        </button>
+      {/snippet}
+    </form.Subscribe>
+    <button
+      type="button"
+      id="reset"
+      onclick={() => {
+        form.reset()
+      }}
+    >
+      Reset
+    </button>
+  </div>
+</form>
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		/// <reference types="svelte" />
		/// <reference types="vite/client" />