fix(multi-select): render checkboxes for form data (#1835)

* chore: downgrade docs to svelte 3 for compatibility
* chore(multi-select): keep checkboxes rendered in DOM
* Display ListBox via CSS

See #1742

Author: theetrain

COMPONENT_INDEX.md

@@ -22,7 +22,7 @@
     "prism-svelte": "^0.4.7",
     "prismjs": "^1.28.0",
     "remark-slug": "^6.0.0",
-    "svelte": "^4.2.0",
+    "svelte": "^3",
     "vite": "^3.0.9"
   },
   "routify": {

docs/package.json

@@ -7006,8 +7006,8 @@
         {
           "name": "itemToInput",
           "kind": "let",
-          "description": "Override the item name, title, labelText passed to the checkbox input",
-          "type": "(item: MultiSelectItem) => { name?: string; labelText?: any; title?: string; }",
+          "description": "Override the item name, title, labelText, or value passed to the user-selectable checkbox input as well as the hidden inputs.",
+          "type": "(item: MultiSelectItem) => { name?: string; labelText?: any; title?: string; value?: string }",
           "value": "(item) => {}",
           "isFunction": true,
           "isFunctionDeclaration": false,

docs/src/COMPONENT_API.json

@@ -11,7 +11,12 @@
 
 ## Default
 
-By default, items will be ordered alphabetically based on the `item.text` value. To prevent this, see [#no-alphabetical-ordering](#no-alphabetical-ordering).
+By default, items will be ordered alphabetically based on the `item.text` value.
+To prevent this, see [#no-alphabetical-ordering](#no-alphabetical-ordering).
+
+MultiSelect provides interactivity for a list of checkbox inputs. Those
+checkboxes will remain rendered in the DOM and are submittable within forms.
+Checkbox attributes can be adjusted via the `itemToInput` prop.
 
 <MultiSelect titleText="Contact" label="Select contact methods..."
     items="{[{id: "0", text: "Slack"},
@@ -73,6 +78,34 @@ Use the `itemToString` prop to format the display of individual items.
     sortItem="{() => {}}"
   />
 
+## Format checkbox values
+
+Use the `itemToInput` prop to customize the user-selectable checkbox values.
+This will also override the underlying hidden inputs used for form submission.
+
+For example: 
+
+```js
+(item) => ({name: `Contact_${item.id}`], value: item.id})
+
+
+```
+
+The above function sets the `name` attribute to
+`Contact_0` (respective to each item's `id`) for every hidden input that
+renders, along with each respective item's `id` set to the `value` attribute.
+
+<MultiSelect
+  itemToInput={(item) => ({name: 'contact', value: item.id})}
+  titleText="Contact"
+  label="Select contact methods..."
+  items="{[
+    {id: "0", text: "Slack"},
+    {id: "1", text: "Email"},
+    {id: "2", text: "Fax"}
+  ]}"
+/>
+
 ## Top direction
 
 Set `direction` to `"top"` for the dropdown menu to appear above the input.
@@ -159,4 +192,4 @@ Use the `disabled` property in the `items` prop to disable specific items.
     { id: "1", text: "Email", disabled: true },
     { id: "2", text: "Fax" },
   ]}
-/>
+/>

docs/src/pages/components/MultiSelect.svx

@@ -2,51 +2,11 @@
 # yarn lockfile v1
 
 
-"@ampproject/remapping@^2.2.1":
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/@ampproject/remapping/-/remapping-2.2.1.tgz#99e8e11851128b8702cd57c33684f1d0f260b630"
-  integrity sha512-lFMjJTrFL3j7L9yBxwYfCq2k6qqwHyzuUl/XBnif78PWTJYyL/dfowQHWE3sp6U6ZzqWiiIZnpTMO96zhkjwtg==
-  dependencies:
-    "@jridgewell/gen-mapping" "^0.3.0"
-    "@jridgewell/trace-mapping" "^0.3.9"
-
 "@esbuild/linux-loong64@0.14.54":
   version "0.14.54"
   resolved "https://registry.yarnpkg.com/@esbuild/linux-loong64/-/linux-loong64-0.14.54.tgz#de2a4be678bd4d0d1ffbb86e6de779cde5999028"
   integrity sha512-bZBrLAIX1kpWelV0XemxBZllyRmM6vgFQQG2GdNb+r3Fkp0FOh1NJSvekXDs7jq70k4euu1cryLMfU+mTXlEpw==
 
-"@jridgewell/gen-mapping@^0.3.0":
-  version "0.3.3"
-  resolved "https://registry.yarnpkg.com/@jridgewell/gen-mapping/-/gen-mapping-0.3.3.tgz#7e02e6eb5df901aaedb08514203b096614024098"
-  integrity sha512-HLhSWOLRi875zjjMG/r+Nv0oCW8umGb0BgEhyX3dDX3egwZtB8PqLnjz3yedt8R5StBrzcg4aBpnh8UA9D1BoQ==
-  dependencies:
-    "@jridgewell/set-array" "^1.0.1"
-    "@jridgewell/sourcemap-codec" "^1.4.10"
-    "@jridgewell/trace-mapping" "^0.3.9"
-
-"@jridgewell/resolve-uri@^3.1.0":
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/@jridgewell/resolve-uri/-/resolve-uri-3.1.1.tgz#c08679063f279615a3326583ba3a90d1d82cc721"
-  integrity sha512-dSYZh7HhCDtCKm4QakX0xFpsRDqjjtZf/kjI/v3T3Nwt5r8/qz/M19F9ySyOqU94SXBmeG9ttTul+YnR4LOxFA==
-
-"@jridgewell/set-array@^1.0.1":
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/@jridgewell/set-array/-/set-array-1.1.2.tgz#7c6cf998d6d20b914c0a55a91ae928ff25965e72"
-  integrity sha512-xnkseuNADM0gt2bs+BvhO0p78Mk762YnZdsuzFV018NoG1Sj1SCQvpSqa7XUaTam5vAGasABV9qXASMKnFMwMw==
-
-"@jridgewell/sourcemap-codec@^1.4.10", "@jridgewell/sourcemap-codec@^1.4.14", "@jridgewell/sourcemap-codec@^1.4.15":
-  version "1.4.15"
-  resolved "https://registry.yarnpkg.com/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.15.tgz#d7c6e6755c78567a951e04ab52ef0fd26de59f32"
-  integrity sha512-eF2rxCRulEKXHTRiDrDy6erMYWqNw4LPdQ8UQA4huuxaQsVeRPFl2oM8oDGxMFhJUWZf9McpLtJasDDZb/Bpeg==
-
-"@jridgewell/trace-mapping@^0.3.18", "@jridgewell/trace-mapping@^0.3.9":
-  version "0.3.19"
-  resolved "https://registry.yarnpkg.com/@jridgewell/trace-mapping/-/trace-mapping-0.3.19.tgz#f8a3249862f91be48d3127c3cfe992f79b4b8811"
-  integrity sha512-kf37QtfW+Hwx/buWGMPcR60iF9ziHa6r/CZJIHbmcm4+0qrXiVdxegAH0F6yddEVQ7zdkjcGCgCzUu+BcbhQxw==
-  dependencies:
-    "@jridgewell/resolve-uri" "^3.1.0"
-    "@jridgewell/sourcemap-codec" "^1.4.14"
-
 "@rollup/pluginutils@^4.2.1":
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/@rollup/pluginutils/-/pluginutils-4.2.1.tgz#e6c6c3aba0744edce3fb2074922d3776c0af2a6d"
@@ -103,11 +63,6 @@
   resolved "https://registry.yarnpkg.com/@tootallnate/once/-/once-1.1.2.tgz#ccb91445360179a04e7fe6aff78c00ffc1eeaf82"
   integrity sha512-RbzJvlNzmRq5c3O09UipeuXno4tA1FE6ikOjxZK0tuxVv3412l64l5t1W5pj4+rJq9vpkm/kwiR07aZXnsKPxw==
 
-"@types/estree@*", "@types/estree@^1.0.0", "@types/estree@^1.0.1":
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/@types/estree/-/estree-1.0.1.tgz#aa22750962f3bf0e79d753d3cc067f010c95f194"
-  integrity sha512-LG4opVs2ANWZ1TJoKc937iMmNstM/d0ae1vNbnBvBhqCSezgVUOzcLCqbI5elV8Vy6WKwKjaqR+zO9VKirBBCA==
-
 "@types/node@>=4.2.0 < 13":
   version "12.12.67"
   resolved "https://registry.npmjs.org/@types/node/-/node-12.12.67.tgz#4f86badb292e822e3b13730a1f9713ed2377f789"
@@ -141,11 +96,6 @@ acorn@^7.1.1:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.4.1.tgz#feaed255973d2e77555b83dbc08851a6c63520fa"
   integrity sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==
 
-acorn@^8.10.0, acorn@^8.9.0:
-  version "8.10.0"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.10.0.tgz#8be5b3907a67221a81ab23c7889c4c5526b62ec5"
-  integrity sha512-F0SAmZ8iUtS//m8DmCTA0jlh6TDKkHQyK6xc6V4KDTyZKA9dnvX9/3sRTVQrWm79glUAZbnmmNcdYwUIHWVybw==
-
 acorn@^8.2.4:
   version "8.7.1"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.7.1.tgz#0197122c843d1bf6d0a5e83220a788f278f63c30"
@@ -179,13 +129,6 @@ argparse@^1.0.7:
   dependencies:
     sprintf-js "~1.0.2"
 
-aria-query@^5.3.0:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/aria-query/-/aria-query-5.3.0.tgz#650c569e41ad90b51b3d7df5e5eed1c7549c103e"
-  integrity sha512-b0P0sZPKtyu8HkeRAfCq0IfURZK+SuwMjY1UXGBU27wpAiTwQAIlq56IbIO+ytk/JjS1fMR14ee5WBBfKi5J6A==
-  dependencies:
-    dequal "^2.0.3"
-
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -196,13 +139,6 @@ at-least-node@^1.0.0:
   resolved "https://registry.npmjs.org/at-least-node/-/at-least-node-1.0.0.tgz#602cd4b46e844ad4effc92a8011a3c46e0238dc2"
   integrity sha512-+q/t7Ekv1EDY2l6Gda6LLiX14rU9TV20Wa3ofeQmwPFZbOMo9DXrLbOjFaaclkXKWidIaopwAObQDqwWtGUjqg==
 
-axobject-query@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/axobject-query/-/axobject-query-3.2.1.tgz#39c378a6e3b06ca679f29138151e45b2b32da62a"
-  integrity sha512-jsyHu61e6N4Vbz/v18DHwWYKK0bSWLqn47eeDSKPB7m8tqMHF9YJ+mhIk2lVteyZrY8tnSj/jHOv4YiTCuCJgg==
-  dependencies:
-    dequal "^2.0.3"
-
 balanced-match@^1.0.0:
   version "1.0.0"
   resolved "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
@@ -229,7 +165,7 @@ bufferutil@^4.0.1:
     node-gyp-build "~3.7.0"
 
 carbon-components-svelte@../:
-  version "0.80.0"
+  version "0.81.1"
   dependencies:
     flatpickr "4.6.9"
 
@@ -265,17 +201,6 @@ clipboard-copy@^4.0.1:
   resolved "https://registry.yarnpkg.com/clipboard-copy/-/clipboard-copy-4.0.1.tgz#326ef9726d4ffe72d9a82a7bbe19379de692017d"
   integrity sha512-wOlqdqziE/NNTUJsfSgXmBMIrYmfd5V0HCGsR8uAKHcg+h9NENWINcfRjtWGU77wDHC8B8ijV4hMTGYbrKovng==
 
-code-red@^1.0.3:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/code-red/-/code-red-1.0.4.tgz#59ba5c9d1d320a4ef795bc10a28bd42bfebe3e35"
-  integrity sha512-7qJWqItLA8/VPVlKJlFXU+NBlo/qyfs39aJcuMT/2ere32ZqvF5OSxgdM5xOfJJ7O429gg2HM47y8v9P+9wrNw==
-  dependencies:
-    "@jridgewell/sourcemap-codec" "^1.4.15"
-    "@types/estree" "^1.0.1"
-    acorn "^8.10.0"
-    estree-walker "^3.0.3"
-    periscopic "^3.1.0"
-
 color-convert@^1.9.0:
   version "1.9.3"
   resolved "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
@@ -344,14 +269,6 @@ cross-spawn@^7.0.1:
     shebang-command "^2.0.0"
     which "^2.0.1"
 
-css-tree@^2.3.1:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-2.3.1.tgz#10264ce1e5442e8572fc82fbe490644ff54b5c20"
-  integrity sha512-6Fv1DV/TYw//QF5IzQdqsNDjx/wc8TrMBZsqjL9eW01tWb7R7k/mq+/VXfJCl7SoD5emsJop9cOByJZfs8hYIw==
-  dependencies:
-    mdn-data "2.0.30"
-    source-map-js "^1.0.1"
-
 cssom@^0.4.4:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.4.4.tgz#5a66cf93d2d0b661d80bf6a44fb65f5c2e4e0a10"
@@ -412,11 +329,6 @@ delayed-stream@~1.0.0:
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
   integrity sha512-ZySD7Nf91aLB0RxL4KGrKHBXl7Eds1DAmEdcoVawXnLD7SDhpNgtuII2aAkg7a7QS41jxPSZ17p4VdGnMHk3MQ==
 
-dequal@^2.0.3:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/dequal/-/dequal-2.0.3.tgz#2644214f1997d39ed0ee0ece72335490a7ac67be"
-  integrity sha512-0je+qPKHEMohvfRTCEo3CrPG6cAzAYgmzKyxRiYSSDkS6eGJdyVJm7WaYA5ECaAD9wLB2T4EEeymA5aFVcYXCA==
-
 domexception@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/domexception/-/domexception-2.0.1.tgz#fb44aefba793e1574b0af6aed2801d057529f304"
@@ -654,13 +566,6 @@ estree-walker@^2.0.1:
   resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-2.0.2.tgz#52f010178c2a4c117a7757cfe942adb7d2da4cac"
   integrity sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w==
 
-estree-walker@^3.0.0, estree-walker@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/estree-walker/-/estree-walker-3.0.3.tgz#67c3e549ec402a487b4fc193d1953a524752340d"
-  integrity sha512-7RUKfXgSMMkzt6ZuXmqapOurLGPPfgj6l9uRZ7lRGolvk0y2yocc35LdcxKC5PQZdn2DMqioAQ2NoWcrTKmm6g==
-  dependencies:
-    "@types/estree" "^1.0.0"
-
 esutils@^2.0.2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.3.tgz#74d2eb4de0b8da1293711910d50775b9b710ef64"
@@ -807,13 +712,6 @@ is-potential-custom-element-name@^1.0.1:
   resolved "https://registry.yarnpkg.com/is-potential-custom-element-name/-/is-potential-custom-element-name-1.0.1.tgz#171ed6f19e3ac554394edf78caa05784a45bebb5"
   integrity sha512-bCYeRA2rVibKZd+s2625gGnGF/t7DSqDs4dP7CrLA1m7jKWz6pps0LpYLJN8Q64HtmPKJ1hrN3nzPNKFEKOUiQ==
 
-is-reference@^3.0.0, is-reference@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/is-reference/-/is-reference-3.0.1.tgz#d400f4260f7e55733955e60d361d827eb4d3b831"
-  integrity sha512-baJJdQLiYaJdvFbJqXrcGv3WU3QCzBlUcI5QhbesIm6/xPsvmO+2CDoi/GMOFBQEQm+PXkwOPrp9KK5ozZsp2w==
-  dependencies:
-    "@types/estree" "*"
-
 is-regex@^1.1.1:
   version "1.1.1"
   resolved "https://registry.npmjs.org/is-regex/-/is-regex-1.1.1.tgz#c6f98aacc546f6cec5468a07b7b153ab564a57b9"
@@ -918,11 +816,6 @@ load-json-file@^4.0.0:
     pify "^3.0.0"
     strip-bom "^3.0.0"
 
-locate-character@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/locate-character/-/locate-character-3.0.0.tgz#0305c5b8744f61028ef5d01f444009e00779f974"
-  integrity sha512-SW13ws7BjaeJ6p7Q6CO2nchbYEc3X3J6WrmTTDto7yMPqVSZTUyY5Tjbid+Ab8gLnATtygYtiDIJGQRRn2ZOiA==
-
 lodash@^4.7.0:
   version "4.17.21"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
@@ -942,23 +835,11 @@ magic-string@^0.26.2:
   dependencies:
     sourcemap-codec "^1.4.8"
 
-magic-string@^0.30.0:
-  version "0.30.3"
-  resolved "https://registry.yarnpkg.com/magic-string/-/magic-string-0.30.3.tgz#403755dfd9d6b398dfa40635d52e96c5ac095b85"
-  integrity sha512-B7xGbll2fG/VjP+SWg4sX3JynwIU0mjoTc6MPpKNuIvftk6u6vqhDnk1R80b8C2GBR6ywqy+1DcKBrevBg+bmw==
-  dependencies:
-    "@jridgewell/sourcemap-codec" "^1.4.15"
-
 mdast-util-to-string@^1.0.0:
   version "1.1.0"
   resolved "https://registry.npmjs.org/mdast-util-to-string/-/mdast-util-to-string-1.1.0.tgz#27055500103f51637bd07d01da01eb1967a43527"
   integrity sha512-jVU0Nr2B9X3MU4tSK7JP1CMkSvOj7X5l/GboG1tKRw52lLF1x2Ju92Ms9tNetCcbfX3hzlM73zYo2NKkWSfF/A==
 
-mdn-data@2.0.30:
-  version "2.0.30"
-  resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-2.0.30.tgz#ce4df6f80af6cfbe218ecd5c552ba13c4dfa08cc"
-  integrity sha512-GaqWWShW4kv/G9IEucWScBx9G1/vsFZZJUO+tD26M8J8z3Kw5RDQjaoZe03YAClgeS/SWPOcb4nkFBTEi5DUEA==
-
 mdsvex@^0.10.6:
   version "0.10.6"
   resolved "https://registry.yarnpkg.com/mdsvex/-/mdsvex-0.10.6.tgz#5ba975f4616e5255ca31cd93d33e2c2a22845631"
@@ -1125,15 +1006,6 @@ path-type@^3.0.0:
   dependencies:
     pify "^3.0.0"
 
-periscopic@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/periscopic/-/periscopic-3.1.0.tgz#7e9037bf51c5855bd33b48928828db4afa79d97a"
-  integrity sha512-vKiQ8RRtkl9P+r/+oefh25C3fhybptkHKCZSPlcXiJux2tJF55GnEj3BVn4A5gKfq9NWWXXrxkHBwVPUfH0opw==
-  dependencies:
-    "@types/estree" "^1.0.0"
-    estree-walker "^3.0.0"
-    is-reference "^3.0.0"
-
 picocolors@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.0.tgz#cb5bdc74ff3f51892236eaf79d68bc44564ab81c"
@@ -1319,7 +1191,7 @@ shell-quote@^1.6.1:
   resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.7.3.tgz#aa40edac170445b9a431e17bb62c0b881b9c4123"
   integrity sha512-Vpfqwm4EnqGdlsBFNmHhxhElJYrdfcxPThu+ryKS5J8L/fhAwLazFZtq+S+TWZ9ANj2piSQLGj6NQg+lKPmxrw==
 
-source-map-js@^1.0.1, source-map-js@^1.0.2:
+source-map-js@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
   integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==
@@ -1418,24 +1290,10 @@ svelte-hmr@^0.14.12:
   resolved "https://registry.yarnpkg.com/svelte-hmr/-/svelte-hmr-0.14.12.tgz#a127aec02f1896500b10148b2d4d21ddde39973f"
   integrity sha512-4QSW/VvXuqVcFZ+RhxiR8/newmwOCTlbYIezvkeN6302YFRE8cXy0naamHcjz8Y9Ce3ITTZtrHrIL0AGfyo61w==
 
-svelte@^4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/svelte/-/svelte-4.2.0.tgz#0e4304c15524450b22fba02516eb72efbd8847b6"
-  integrity sha512-kVsdPjDbLrv74SmLSUzAsBGquMs4MPgWGkGLpH+PjOYnFOziAvENVzgJmyOCV2gntxE32aNm8/sqNKD6LbIpeQ==
-  dependencies:
-    "@ampproject/remapping" "^2.2.1"
-    "@jridgewell/sourcemap-codec" "^1.4.15"
-    "@jridgewell/trace-mapping" "^0.3.18"
-    acorn "^8.9.0"
-    aria-query "^5.3.0"
-    axobject-query "^3.2.1"
-    code-red "^1.0.3"
-    css-tree "^2.3.1"
-    estree-walker "^3.0.3"
-    is-reference "^3.0.1"
-    locate-character "^3.0.0"
-    magic-string "^0.30.0"
-    periscopic "^3.1.0"
+svelte@^3:
+  version "3.59.2"
+  resolved "https://registry.yarnpkg.com/svelte/-/svelte-3.59.2.tgz#a137b28e025a181292b2ae2e3dca90bf8ec73aec"
+  integrity sha512-vzSyuGr3eEoAtT/A6bmajosJZIUWySzY2CzB3w2pgPvnkUjGqlDnsNnA0PMO+mMAhuyMul6C2uuZzY6ELSkzyA==
 
 symbol-tree@^3.2.4:
   version "3.2.4"

docs/yarn.lock

@@ -22,8 +22,8 @@
   export let itemToString = (item) => item.text || item.id;
 
   /**
-   * Override the item name, title, labelText passed to the checkbox input
-   * @type {(item: MultiSelectItem) => { name?: string; labelText?: any; title?: string; }}
+   * Override the item name, title, labelText, or value passed to the user-selectable checkbox input as well as the hidden inputs.
+   * @type {(item: MultiSelectItem) => { name?: string; labelText?: any; title?: string; value?: string }}
    */
   export let itemToInput = (item) => {};
 
@@ -483,7 +483,7 @@
         <ListBoxMenuIcon open="{open}" translateWithId="{translateWithId}" />
       {/if}
     </ListBoxField>
-    {#if open}
+    <div style:display="{open ? "block" : "none"}">
       <ListBoxMenu
         aria-label="{ariaLabel}"
         id="{id}"
@@ -533,7 +533,7 @@
           </ListBoxMenuItem>
         {/each}
       </ListBoxMenu>
-    {/if}
+    </div>
   </ListBox>
   {#if !inline && !invalid && !warn && helperText}
     <div

src/MultiSelect/MultiSelect.svelte

@@ -27,13 +27,14 @@ export interface MultiSelectProps extends RestProps {
   itemToString?: (item: MultiSelectItem) => any;
 
   /**
-   * Override the item name, title, labelText passed to the checkbox input
+   * Override the item name, title, labelText, or value passed to the user-selectable checkbox input as well as the hidden inputs.
    * @default (item) => {}
    */
   itemToInput?: (item: MultiSelectItem) => {
     name?: string;
     labelText?: any;
     title?: string;
+    value?: string;
   };
 
   /**