Meituan-Dianping/mpvue · error

Templates should only be responsible for mapping the state t

Error message

Templates should only be responsible for mapping the state to the UI. Avoid placing tags with side-effects in your templates, such as <${tag}>, as they will not be parsed.

What it means

Error "Templates should only be responsible for mapping the state to the UI. Avoid placing tags with side-effects in your templates, such as <${tag}>, as they will not be parsed." thrown in Meituan-Dianping/mpvue.

Source

Thrown at src/compiler/parser/index.js:119

      if (isIE && ns === 'svg') {
        attrs = guardIESVGBug(attrs)
      }

      const element: ASTElement = {
        type: 1,
        tag,
        attrsList: attrs,
        attrsMap: makeAttrsMap(attrs),
        parent: currentParent,
        children: []
      }
      if (ns) {
        element.ns = ns
      }

      if (isForbiddenTag(element) && !isServerRendering()) {
        element.forbidden = true
        process.env.NODE_ENV !== 'production' && warn(
          'Templates should only be responsible for mapping the state to the ' +
          'UI. Avoid placing tags with side-effects in your templates, such as ' +
          `<${tag}>` + ', as they will not be parsed.'
        )
      }

      // apply pre-transforms
      for (let i = 0; i < preTransforms.length; i++) {
        preTransforms[i](element, options)
      }

      if (!inVPre) {
        processPre(element)
        if (element.pre) {
          inVPre = true
        }
      }
      if (platformIsPreTag(element.tag)) {

View on GitHub (pinned to 6c5d78ee04)

Solutions

1. Move side-effectful tags (<script>, <style> in restricted contexts) out of the template into the page or build pipeline
2. Use components/lifecycle hooks to trigger effects instead of template tags

When it happens

Trigger: Thrown at src/compiler/parser/index.js:119 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Meituan-Dianping/mpvue@6c5d78ee04 (2026-09-02). Data as JSON: /api/errors/e45b46281012c985. Report an issue: GitHub.