TypeError: Cannot read properties of undefined (reading '__composer')

Reporting a bug?

Follow up for https://github.com/intlify/vue-i18n-next/issues/793#issuecomment-1015856474

I’m hitting a slightly similar error to #793 with the latest version 9.2.0-beta.28:

I could not notice if it has any effects on the UI of my application but the errors are really annoying.

The code section (copied from dev tools):

        mounted() {
            nextTick(() => {
                /* istanbul ignore if */
                if (((process.env.NODE_ENV !== 'production') || __VUE_PROD_DEVTOOLS__) &&
                    !false &&
                    this.$el) {
                    this.$el.__VUE_I18N__ = this.$i18n.__composer;
                    const emitter = (this.__v_emitter =
                        createEmitter());
                    const _vueI18n = this.$i18n;
                    _vueI18n.__enableEmitter && _vueI18n.__enableEmitter(emitter);
                    emitter.on('*', addTimelineEvent);
                }
            });
        },

Expected behavior

No error in console.

Reproduction

This isn’t a minimal reproduction of the bug, but I’m not sure how I should reproduce it - even in my application I can’t understand why it happens and it does not happen all the time.

1. Check out https://kolaente.dev/vikunja/frontend at commit 55b77725df4a71ea248fbee2eb7b613fc590f6aa
2. Install dependencies with yarn install
3. Start the dev server with yarn serve
4. Using chrome, open the app at localhost:5000
5. As an api url, use https://try.vikunja.io
6. Use demo as a username and password.
7. Click around in the app a bit with dev tools openend, the error will appear eventually.

System Info

System:
    OS: Linux 5.10 NixOS 21.11 (Porcupine) 21.11 (Porcupine)
    CPU: (12) x64 AMD Ryzen 5 3600 6-Core Processor
    Memory: 12.41 GB / 31.37 GB
    Container: Yes
    Shell: 5.8 - /run/current-system/sw/bin/zsh
  Binaries:
    Node: 14.18.1 - /etc/profiles/per-user/konrad/bin/node
    Yarn: 1.22.17 - /etc/profiles/per-user/konrad/bin/yarn
    npm: 6.14.15 - /etc/profiles/per-user/konrad/bin/npm
  Browsers:
    Chromium: 97.0.4692.71
    Firefox: 95.0.2
  npmPackages:
    @vitejs/plugin-legacy: 1.6.4 => 1.6.4
    @vitejs/plugin-vue: 2.1.0 => 2.1.0
    @vue/compat: 3.2.28 => 3.2.28
    @vue/eslint-config-typescript: 10.0.0 => 10.0.0
    vite: 2.7.13 => 2.7.13
    vite-plugin-pwa: 0.11.13 => 0.11.13
    vite-svg-loader: 3.1.2 => 3.1.2
    vitest: 0.1.27 => 0.1.27
    vue: 3.2.28 => 3.2.28
    vue-advanced-cropper: 2.7.1 => 2.7.1
    vue-drag-resize: 2.0.3 => 2.0.3
    vue-flatpickr-component: 9.0.5 => 9.0.5
    vue-i18n: 9.2.0-beta.28 => 9.2.0-beta.28
    vue-router: 4.0.12 => 4.0.12
    vue-tsc: 0.30.6 => 0.30.6
    vuedraggable: 4.1.0 => 4.1.0
    vuex: 4.0.2 => 4.0.2

Screenshot

No response

Additional context

No response

Validations

• Read the Contributing Guidelines
• Read the Documentation
• Check that there isn’t already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion
• The provided reproduction is a minimal reproducible example of the bug.

[ManuLmz]

Hi! Same problem with 9.1.10 (also tried 9.1.9 and 9.1.8). Not happening with 9.2.0-beta.36.

Any chance for a fix in 9.1.x or a non-beta version?

Thanks!

[christianbayer]

@kazupon I just tried it with v9.2-beta.30 and now it’s working with no errors.