Cannot read properties of undefined (reading 'type') Oas.ts:80:33 #1575

RichAyotte · 2025-02-24T17:33:39Z

What version of `kubb` is running?

3.6.0

What kind of platform do you use?

Linux

How does your `kubb.config.ts` config look like

import { defineConfig } from '@kubb/core'
import { pluginMsw } from '@kubb/plugin-msw'
import { pluginOas } from '@kubb/plugin-oas'
import { pluginTs } from '@kubb/plugin-ts'
import { pluginVueQuery } from '@kubb/plugin-vue-query'
import { pluginZod } from '@kubb/plugin-zod'

export default defineConfig(() => {
	return {
		name: 'internal-api',
		input: {
			path: 'https://api.payman.dev/api/v3/api-docs',
		},
		output: {
			barrelType: 'named',
			clean: true,
			extension: {
				'.ts': '',
			},
			path: './src/generated',
		},
		plugins: [
			pluginOas({
				output: {
					path: 'schemas',
					barrelType: false,
				},
			}),
			pluginTs({
				enumSuffix: '',
				enumType: 'literal',
				output: {
					path: 'types',
					barrelType: false,
				},
				unknownType: 'unknown',
			}),
			pluginVueQuery({
				client: {
					importPath: '@/utils/paymanClient',
				},
				infinite: {
					queryParam: 'page',
					cursorParam: 'nextPage',
				},
				output: {
					path: 'composables',
					barrelType: false,
				},
				paramsType: 'object',
				pathParamsType: 'object',
				parser: 'zod',
			}),
			pluginZod({
				output: {
					path: 'zod',
					barrelType: false,
				},
				typed: false,
				unknownType: 'unknown',
				inferred: true,
			}),
			pluginMsw({
				output: {
					path: 'mocks',
					barrelType: false,
				},
				handlers: true,
			}),
		],
	}
})

Swagger/OpenAPI file?

https://api.payman.dev/api/v3/api-docs

What version of external packages are you using(`@tanstack-query`, `MSW`, `React`, `Vue`, ...)

{
	"type": "module",
	"dependencies": {
		"@amplitude/analytics-browser": "^2.11.12",
		"@dinero.js/calculator-bigint": "^2.0.0-alpha.14",
		"@dinero.js/currencies": "^2.0.0-alpha.14",
		"@growthbook/growthbook": "^1.4.1",
		"@intercom/messenger-js-sdk": "^0.0.14",
		"@quasar/extras": "^1.16.17",
		"@stripe/connect-js": "^3.3.21",
		"@stripe/stripe-js": "^5.6.0",
		"@tanstack/vue-query": "^5.66.9",
		"@vue-stripe/vue-stripe": "^4.5.0",
		"@vueuse/core": "^12.7.0",
		"@zxcvbn-ts/core": "^3.0.4",
		"@zxcvbn-ts/language-common": "^3.0.4",
		"@zxcvbn-ts/language-en": "^3.0.2",
		"date-fns": "^4.1.0",
		"dinero.js": "^2.0.0-alpha.14",
		"eslint-plugin-package-json": "^0.26.0",
		"js-cookie": "^3.0.5",
		"jwt-decode": "^4.0.0",
		"ky": "^1.7.5",
		"lodash-es": "^4.17.21",
		"pinia": "^3.0.1",
		"pinia-plugin-persistedstate": "^4.2.0",
		"qrcode": "^1",
		"qrcode.vue": "^3.6.0",
		"quasar": "^2.17.7",
		"register-service-worker": "^1.7.2",
		"vue": "^3.5.13",
		"vue-component-type-helpers": "^2.2.4",
		"vue-markdown-render": "^2.2.1",
		"vue-router": "^4.5.0",
		"zod": "^3.24.2"
	},
	"devDependencies": {
		"@biomejs/biome": "1.9.4",
		"@eslint/js": "^9.21.0",
		"@happy-dom/global-registrator": "^17.1.4",
		"@kubb/cli": "^3.6.0",
		"@kubb/core": "^3.6.0",
		"@kubb/plugin-msw": "^3.6.0",
		"@kubb/plugin-oas": "^3.6.0",
		"@kubb/plugin-ts": "^3.6.0",
		"@kubb/plugin-vue-query": "^3.6.0",
		"@kubb/plugin-zod": "^3.6.0",
		"@quasar/app-vite": "^2.1.1",
		"@stoplight/spectral-core": "^1.19.4",
		"@stoplight/spectral-rulesets": "^1.21.3",
		"@total-typescript/ts-reset": "^0.6.1",
		"@types/bun": "^1.2.3",
		"@types/eslint__js": "^9.14.0",
		"@types/js-cookie": "^3.0.6",
		"@types/lodash-es": "^4.17.12",
		"@typescript-eslint/eslint-plugin": "^8.24.1",
		"@typescript-eslint/parser": "^8.24.1",
		"ajv": "^8.17.1",
		"autoprefixer": "^10.4.20",
		"eslint": "^9.21.0",
		"eslint-config-prettier": "^10.0.1",
		"eslint-plugin-prettier": "^5.2.3",
		"eslint-plugin-vue": "^9.32.0",
		"globals": "^16.0.0",
		"msw": "2.4.3",
		"prettier": "^3.5.2",
		"prettier-plugin-css-order": "^2.1.2",
		"typescript": "5.7.3",
		"typescript-eslint": "^8.24.1",
		"vite-plugin-checker": "^0.9.0",
		"vue-tsc": "^2.2.4"
	},
}

What steps can reproduce the bug?

kubb generate

How often does this bug happen?

Every time

What is the expected behavior?

No throwing

Additional information

❯ bun kubb generate
◐ Loading config                                                 12:09:51 p.m.
✔ Config loaded(kubb.config.ts)                                 12:09:52 p.m.
◐ Building https://api.payman.dev/api/v3/api-docs   internal-api 12:09:52 p.m.
60% ██████████████████░░░░░░░░░░░░ 3/5 | plugin-vue-query: buildStart
[internal-api 12:09:53 p.m.]  ERROR  Build failed https://api.payman.dev/api/v3/api-docs


 ╭───────────────────────────────────internal-api─────────────────────────────────────╮
 │                                                                                    │
 │  Plugins:        5 failed, 5 total                                                 │
 │  Failed:          plugin-oas, plugin-ts, plugin-vue-query, plugin-zod, plugin-msw  │
 │  Generated:      0 files in 0.974s                                                 │
 │  Output:         /home/rich/Projects/payman/dashboard/src/generated                │
 │                                                                                    │
 ╰────────────────────────────────────────────────────────────────────────────────────╯


[internal-api 12:09:53 p.m.]  ERROR  Cannot read properties of undefined (reading 'type') (plugin: plugin-oas, hook: buildStart) (plugin: plugin-oas, hook: buildStart)

    at EventEmitter.<anonymous> (node_modules/@kubb/core/src/logger.ts:93:19)
    at EventEmitter.emit (node:events:520:28)
    at EventEmitter.emit (node_modules/@kubb/core/src/utils/EventEmitter.ts:10:19)
    at Object.emit (node_modules/@kubb/core/src/logger.ts:111:21)
    at PluginManager.#catcher (node_modules/@kubb/core/src/PluginManager.ts:648:17)
    at node_modules/@kubb/core/src/PluginManager.ts:383:26
    at Array.forEach (<anonymous>)
    at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:379:13)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at safeBuild (node_modules/@kubb/core/src/build.ts:100:5)

  [cause]: Cannot read properties of undefined (reading 'type') (plugin: plugin-oas, hook: buildStart)

      at EventEmitter.<anonymous> (node_modules/@kubb/core/src/logger.ts:93:19)
      at EventEmitter.emit (node:events:520:28)
      at EventEmitter.emit (node_modules/@kubb/core/src/utils/EventEmitter.ts:10:19)
      at Object.emit (node_modules/@kubb/core/src/logger.ts:111:21)
      at PluginManager.#catcher (node_modules/@kubb/core/src/PluginManager.ts:648:17)
      at node_modules/@kubb/core/src/PluginManager.ts:571:14
      at processTicksAndRejections (node:internal/process/task_queues:95:5)
      at async Promise.allSettled (index 0)
      at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:377:21)
      at safeBuild (node_modules/@kubb/core/src/build.ts:100:5)

    [cause]: Cannot read properties of undefined (reading 'type')

        at node_modules/@kubb/oas/src/Oas.ts:86:30
        at Array.forEach (<anonymous>)
        at node_modules/@kubb/oas/src/Oas.ts:80:33
        at Array.forEach (<anonymous>)
        at Oas.resolveDiscriminators (node_modules/@kubb/oas/src/Oas.ts:67:29)
        at _SchemaGenerator.build (node_modules/@kubb/plugin-oas/src/SchemaGenerator.ts:912:9)
        at Object.buildStart (node_modules/@kubb/plugin-oas/src/plugin.ts:135:49)
        at processTicksAndRejections (node:internal/process/task_queues:95:5)
        at async Promise.allSettled (index 0)
        at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:377:21)

The text was updated successfully, but these errors were encountered:

RichAyotte · 2025-02-24T17:36:34Z

Reverting just the @kubb/plugin-oas package to 3.5.12 eliminates the error.

stijnvanhulle · 2025-02-27T20:12:43Z

Same as #1561

Setting enumSuffix to an empty string will result in some issues in creating enums, best to not set that or Kubb will override other values. I will add an error when an empty string is being used.

RichAyotte · 2025-02-27T20:23:31Z

Same error with enumSuffix not set.

			pluginTs({
				enumType: 'literal',
				output: {
					path: 'types',
					barrelType: false,
				},
				unknownType: 'unknown',
			}),

 ╭───────────────────────────────────internal-api─────────────────────────────────────╮
 │                                                                                    │
 │  Plugins:        5 failed, 5 total                                                 │
 │  Failed:          plugin-oas, plugin-ts, plugin-vue-query, plugin-zod, plugin-msw  │
 │  Generated:      0 files in 0.876s                                                 │
 │  Output:         /home/rich/Projects/payman/dashboard/src/generated                │
 │                                                                                    │
 ╰────────────────────────────────────────────────────────────────────────────────────╯


[internal-api 3:21:59 p.m.]  ERROR  Cannot read properties of undefined (reading 'type') (plugin: plugin-oas, hook: buildStart) (plugin: plugin-oas, hook: buildStart)

    at EventEmitter.<anonymous> (node_modules/@kubb/core/src/logger.ts:93:19)
    at EventEmitter.emit (node:events:520:28)
    at EventEmitter.emit (node_modules/@kubb/core/src/utils/EventEmitter.ts:10:19)
    at Object.emit (node_modules/@kubb/core/src/logger.ts:111:21)
    at PluginManager.#catcher (node_modules/@kubb/core/src/PluginManager.ts:648:17)
    at node_modules/@kubb/core/src/PluginManager.ts:383:26
    at Array.forEach (<anonymous>)
    at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:379:13)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at safeBuild (node_modules/@kubb/core/src/build.ts:100:5)

  [cause]: Cannot read properties of undefined (reading 'type') (plugin: plugin-oas, hook: buildStart)

      at EventEmitter.<anonymous> (node_modules/@kubb/core/src/logger.ts:93:19)
      at EventEmitter.emit (node:events:520:28)
      at EventEmitter.emit (node_modules/@kubb/core/src/utils/EventEmitter.ts:10:19)
      at Object.emit (node_modules/@kubb/core/src/logger.ts:111:21)
      at PluginManager.#catcher (node_modules/@kubb/core/src/PluginManager.ts:648:17)
      at node_modules/@kubb/core/src/PluginManager.ts:571:14
      at processTicksAndRejections (node:internal/process/task_queues:95:5)
      at async Promise.allSettled (index 0)
      at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:377:21)
      at safeBuild (node_modules/@kubb/core/src/build.ts:100:5)

    [cause]: Cannot read properties of undefined (reading 'type')

        at node_modules/@kubb/oas/src/Oas.ts:86:30
        at Array.forEach (<anonymous>)
        at node_modules/@kubb/oas/src/Oas.ts:80:33
        at Array.forEach (<anonymous>)
        at Oas.resolveDiscriminators (node_modules/@kubb/oas/src/Oas.ts:67:29)
        at _SchemaGenerator.build (node_modules/@kubb/plugin-oas/src/SchemaGenerator.ts:912:9)
        at Object.buildStart (node_modules/@kubb/plugin-oas/src/plugin.ts:135:49)
        at processTicksAndRejections (node:internal/process/task_queues:95:5)
        at async Promise.allSettled (index 0)
        at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:377:21)

stijnvanhulle · 2025-02-27T20:32:10Z

Can you add the input with adding --debug to the cli command or create a playground/repo to so we can try out what is going wrong?

RichAyotte · 2025-02-27T20:39:54Z

bun kubb generate --debug

stdout

❯ bun kubb generate --debug > debug.log

[internal-api 3:34:07 p.m.] ERROR Build failed https://api.payman.dev/api/v3/api-docs

[internal-api 3:34:07 p.m.] ERROR Cannot read properties of undefined (reading 'type')

at node_modules/@kubb/oas/src/Oas.ts:86:30
at Array.forEach (<anonymous>)
at node_modules/@kubb/oas/src/Oas.ts:80:33
at Array.forEach (<anonymous>)
at Oas.resolveDiscriminators (node_modules/@kubb/oas/src/Oas.ts:67:29)
at _SchemaGenerator.build (node_modules/@kubb/plugin-oas/src/SchemaGenerator.ts:916:9)
at Object.buildStart (node_modules/@kubb/plugin-oas/src/plugin.ts:135:49)
at processTicksAndRejections (node:internal/process/task_queues:95:5)
at async Promise.allSettled (index 0)
at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:377:21)

[internal-api 3:34:07 p.m.] ERROR Cannot read properties of undefined (reading 'type') (plugin: plugin-oas, hook: buildStart) (plugin: plugin-oas, hook: buildStart)

at EventEmitter.<anonymous> (node_modules/@kubb/core/src/logger.ts:93:19)
at EventEmitter.emit (node:events:520:28)
at EventEmitter.emit (node_modules/@kubb/core/src/utils/EventEmitter.ts:10:19)
at Object.emit (node_modules/@kubb/core/src/logger.ts:111:21)
at PluginManager.#catcher (node_modules/@kubb/core/src/PluginManager.ts:648:17)
at node_modules/@kubb/core/src/PluginManager.ts:383:26
at Array.forEach (<anonymous>)
at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:379:13)
at processTicksAndRejections (node:internal/process/task_queues:95:5)
at safeBuild (node_modules/@kubb/core/src/build.ts:100:5)

[cause]: Cannot read properties of undefined (reading 'type') (plugin: plugin-oas, hook: buildStart)

  at EventEmitter.<anonymous> (node_modules/@kubb/core/src/logger.ts:93:19)
  at EventEmitter.emit (node:events:520:28)
  at EventEmitter.emit (node_modules/@kubb/core/src/utils/EventEmitter.ts:10:19)
  at Object.emit (node_modules/@kubb/core/src/logger.ts:111:21)
  at PluginManager.#catcher (node_modules/@kubb/core/src/PluginManager.ts:648:17)
  at node_modules/@kubb/core/src/PluginManager.ts:571:14
  at processTicksAndRejections (node:internal/process/task_queues:95:5)
  at async Promise.allSettled (index 0)
  at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:377:21)
  at safeBuild (node_modules/@kubb/core/src/build.ts:100:5)

[cause]: Cannot read properties of undefined (reading 'type')

    at node_modules/@kubb/oas/src/Oas.ts:86:30
    at Array.forEach (<anonymous>)
    at node_modules/@kubb/oas/src/Oas.ts:80:33
    at Array.forEach (<anonymous>)
    at Oas.resolveDiscriminators (node_modules/@kubb/oas/src/Oas.ts:67:29)
    at _SchemaGenerator.build (node_modules/@kubb/plugin-oas/src/SchemaGenerator.ts:916:9)
    at Object.buildStart (node_modules/@kubb/plugin-oas/src/plugin.ts:135:49)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async Promise.allSettled (index 0)
    at PluginManager.hookParallel (node_modules/@kubb/core/src/PluginManager.ts:377:21)

kubb-1740688438530.log

RichAyotte · 2025-02-27T20:40:59Z

I also tried enumType: 'asConst' but same issue.

RichAyotte · 2025-02-27T21:05:33Z

Here's the repro. https://github.com/RichAyotte/kubb-repro

bun generate

metinsut · 2025-03-01T18:11:01Z

current versions

"@kubb/cli": "^2.28.4",
"@kubb/core": "^2.28.4",
"@kubb/plugin-oas": "^2.28.4",
"@kubb/swagger": "^2.28.4",
"@kubb/swagger-client": "^2.28.4",
"@kubb/swagger-ts": "^2.28.4",

`import { defineConfig } from "@kubb/core";
import { pluginOas } from "@kubb/plugin-oas";
import { pluginClient } from "@kubb/swagger-client";
import { pluginTs } from "@kubb/swagger-ts";

export default defineConfig({
root: ".",
input: {
path: "...",
},
output: {
path: "./src",
clean: true,
},
plugins: [
pluginOas(),
pluginTs(),
pluginClient({
output: {
path: "./clients/axios",
},
group: {
type: "tag",
output: "./clients/axios/{{tag}}Service",
},
exclude: [
{
type: "tag",
pattern: "store",
},
],
pathParamsType: "object",
dataReturnType: "full",
}),
],
});`

When I upgrade to v3, I encounter the same error.
mac/bun

RichAyotte added the bug Something isn't working label Feb 24, 2025

stijnvanhulle closed this as completed Feb 27, 2025

stijnvanhulle reopened this Feb 27, 2025

heyBett mentioned this issue Mar 5, 2025

Escape unions without properties #1587

Open

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Cannot read properties of undefined (reading 'type') Oas.ts:80:33 #1575

Cannot read properties of undefined (reading 'type') Oas.ts:80:33 #1575

RichAyotte commented Feb 24, 2025 •

edited

Loading

RichAyotte commented Feb 24, 2025

stijnvanhulle commented Feb 27, 2025

RichAyotte commented Feb 27, 2025 •

edited

Loading

stijnvanhulle commented Feb 27, 2025

RichAyotte commented Feb 27, 2025

RichAyotte commented Feb 27, 2025

RichAyotte commented Feb 27, 2025

metinsut commented Mar 1, 2025 •

edited

Loading

Cannot read properties of undefined (reading 'type') Oas.ts:80:33 #1575

Cannot read properties of undefined (reading 'type') Oas.ts:80:33 #1575

Comments

RichAyotte commented Feb 24, 2025 • edited Loading

What version of kubb is running?

What kind of platform do you use?

How does your kubb.config.ts config look like

Swagger/OpenAPI file?

What version of external packages are you using(@tanstack-query, MSW, React, Vue, ...)

What steps can reproduce the bug?

How often does this bug happen?

What is the expected behavior?

Additional information

RichAyotte commented Feb 24, 2025

stijnvanhulle commented Feb 27, 2025

RichAyotte commented Feb 27, 2025 • edited Loading

stijnvanhulle commented Feb 27, 2025

RichAyotte commented Feb 27, 2025

RichAyotte commented Feb 27, 2025

RichAyotte commented Feb 27, 2025

metinsut commented Mar 1, 2025 • edited Loading

RichAyotte commented Feb 24, 2025 •

edited

Loading

What version of `kubb` is running?

How does your `kubb.config.ts` config look like

What version of external packages are you using(`@tanstack-query`, `MSW`, `React`, `Vue`, ...)

RichAyotte commented Feb 27, 2025 •

edited

Loading

metinsut commented Mar 1, 2025 •

edited

Loading