vue#resolveComponent TypeScript Examples

The following examples show how to use vue#resolveComponent. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ssr.test.ts    From vue-i18n-next with MIT License 6 votes vote down vote up
test('component: i18n-t', async () => {
  const i18n = createI18n({
    legacy: false,
    locale: 'en',
    messages: {}
  })

  const App = defineComponent({
    setup() {
      useI18n({
        locale: 'ja',
        inheritLocale: false,
        messages: {
          ja: { hello: 'こんにちは!' },
          en: { hello: 'hello!' }
        }
      })
      return () => h(resolveComponent('i18n-t'), { tag: 'p', keypath: 'hello' })
    }
    // template: `<i18n-t tag="p" keypath="hello"/>`
  })
  const app = createSSRApp(App)
  app.use(i18n)

  expect(await renderToString(app)).toMatch(`<p>こんにちは!</p>`)
})
Example #2
Source File: FormKitSchema.ts    From formkit with MIT License 4 votes vote down vote up
/**
 *
 * @param library - A library of concrete components to use
 * @param schema -
 * @returns
 */
function parseSchema(
  library: FormKitComponentLibrary,
  schema: FormKitSchemaNode | FormKitSchemaNode[]
): SchemaProvider {
  /**
   * Given an if/then/else schema node, pre-compile the node and return the
   * artifacts for the render function.
   * @param data - The schema context object
   * @param library - The available components
   * @param node - The node to parse
   */
  function parseCondition(
    library: FormKitComponentLibrary,
    node: FormKitSchemaCondition
  ): [RenderContent[0], RenderContent[3], RenderContent[4]] {
    const condition = provider(compile(node.if), { if: true })
    const children = createElements(library, node.then)
    const alternate = node.else ? createElements(library, node.else) : null
    return [condition, children, alternate]
  }

  /**
   * Parses a conditional if/then/else attribute statement.
   * @param data - The data object
   * @param attr - The attribute
   * @param _default - The default value
   * @returns
   */
  function parseConditionAttr(
    attr: FormKitSchemaAttributesCondition,
    _default: FormKitAttributeValue
  ): () => FormKitAttributeValue | FormKitSchemaAttributes {
    const condition = provider(compile(attr.if))
    let b: () => FormKitAttributeValue = () => _default
    let a: () => FormKitAttributeValue = () => _default

    if (typeof attr.then === 'object') {
      a = parseAttrs(attr.then, undefined)
    } else if (typeof attr.then === 'string' && attr.then?.startsWith('$')) {
      a = provider(compile(attr.then))
    } else {
      a = () => attr.then
    }

    if (has(attr, 'else')) {
      if (typeof attr.else === 'object') {
        b = parseAttrs(attr.else)
      } else if (typeof attr.else === 'string' && attr.else?.startsWith('$')) {
        b = provider(compile(attr.else))
      } else {
        b = () => attr.else
      }
    }
    return () => (condition() ? a() : b())
  }

  /**
   * Parse attributes for dynamic content.
   * @param attrs - Object of attributes
   * @returns
   */
  function parseAttrs(
    unparsedAttrs?: FormKitSchemaAttributes | FormKitSchemaAttributesCondition,
    bindExp?: string,
    _default = {}
  ): () => FormKitSchemaAttributes {
    const explicitAttrs = new Set(Object.keys(unparsedAttrs || {}))
    const boundAttrs = bindExp ? provider(compile(bindExp)) : () => ({})
    const staticAttrs: FormKitSchemaAttributes = {}
    const setters: Array<(obj: Record<string, any>) => void> = [
      (attrs) => {
        const bound: Record<string, any> = boundAttrs()
        for (const attr in bound) {
          if (!explicitAttrs.has(attr)) {
            attrs[attr] = bound[attr]
          }
        }
      },
    ]
    if (unparsedAttrs) {
      if (isConditional(unparsedAttrs)) {
        // This is a root conditional object that must produce an object of
        // attributes.
        const condition = parseConditionAttr(
          unparsedAttrs,
          _default
        ) as () => FormKitSchemaAttributes
        return condition
      }
      // Some attributes are explicitly bound, we need to parse those ones
      // using the compiler and create a dynamic "setter".
      for (let attr in unparsedAttrs) {
        const value = unparsedAttrs[attr]
        let getValue: () => any
        const isStr = typeof value === 'string'

        if (attr.startsWith(raw)) {
          // attributes prefixed with __raw__ should not be parsed
          attr = attr.substring(7)
          getValue = () => value
        } else if (
          isStr &&
          value.startsWith('$') &&
          value.length > 1 &&
          !(value.startsWith('$reset') && isClassProp.test(attr))
        ) {
          // Most attribute values starting with $ should be compiled
          // -class attributes starting with `$reset` should not be compiled
          getValue = provider(compile(value))
        } else if (typeof value === 'object' && isConditional(value)) {
          // Conditional attrs require further processing
          getValue = parseConditionAttr(value, undefined)
        } else if (typeof value === 'object' && isPojo(value)) {
          // Sub-parse pojos
          getValue = parseAttrs(value)
        } else {
          // In all other cases, the value is static
          getValue = () => value
          staticAttrs[attr] = value
        }
        setters.push((attrs) => {
          attrs[attr] = getValue()
        })
      }
    }
    return () => {
      const attrs = {}
      setters.forEach((setter) => setter(attrs))
      return attrs
    }
  }

  /**
   * Given a single schema node, parse it and extract the value.
   * @param data - A state object provided to each node
   * @param node - The schema node being parsed
   * @returns
   */
  function parseNode(
    library: FormKitComponentLibrary,
    _node: FormKitSchemaNode
  ): RenderContent {
    let element: RenderContent[1] = null
    let attrs: () => FormKitSchemaAttributes = () => null
    let condition: false | (() => boolean | number | string) = false
    let children: RenderContent[3] = null
    let alternate: RenderContent[4] = null
    let iterator: RenderContent[5] = null
    let resolve = false
    const node = sugar(_node)
    if (isDOM(node)) {
      // This is an actual HTML DOM element
      element = node.$el
      attrs =
        node.$el !== 'text' ? parseAttrs(node.attrs, node.bind) : () => null
    } else if (isComponent(node)) {
      // This is a Vue Component
      if (typeof node.$cmp === 'string') {
        if (has(library, node.$cmp)) {
          element = library[node.$cmp]
        } else {
          element = node.$cmp
          resolve = true
        }
      } else {
        // in this case it must be an actual component
        element = node.$cmp
      }
      attrs = parseAttrs(node.props, node.bind)
    } else if (isConditional(node)) {
      // This is an if/then schema statement
      ;[condition, children, alternate] = parseCondition(library, node)
    }

    // This is the same as a "v-if" statement — not an if/else statement
    if (!isConditional(node) && 'if' in node) {
      condition = provider(compile(node.if as string))
    } else if (!isConditional(node) && element === null) {
      // In this odd case our element is actually a partial and
      // we only want to render the children.
      condition = () => true
    }

    // Compile children down to a function
    if ('children' in node && node.children) {
      if (typeof node.children === 'string') {
        // We are dealing with a raw string value
        if (node.children.startsWith('$slots.')) {
          // this is a lone text node, turn it into a slot
          element = element === 'text' ? 'slot' : element
          children = provider(compile(node.children))
        } else if (node.children.startsWith('$') && node.children.length > 1) {
          const value = provider(compile(node.children))
          children = () => String(value())
        } else {
          children = () => String(node.children)
        }
      } else if (Array.isArray(node.children)) {
        // We are dealing with node sub-children
        children = createElements(library, node.children)
      } else {
        // This is a conditional if/else clause
        const [childCondition, c, a] = parseCondition(library, node.children)
        children = (iterationData?: Record<string, unknown>) =>
          childCondition && childCondition()
            ? c && c(iterationData)
            : a && a(iterationData)
      }
    }

    if (isComponent(node)) {
      if (children) {
        // Children of components need to be provided as an object of slots
        // so we provide an object with the default slot provided as children.
        // We also create a new scope for this default slot, and then on each
        // render pass the scoped slot props to the scope.
        const produceChildren = children
        children = (iterationData?: Record<string, unknown>) => {
          return {
            default(
              slotData?: Record<string, any>,
              key?: symbol
            ): RenderableList {
              // We need to switch the current instance key back to the one that
              // originally called this component's render function.
              const currentKey = instanceKey
              if (key) instanceKey = key
              if (slotData) instanceScopes.get(instanceKey)?.unshift(slotData)
              if (iterationData)
                instanceScopes.get(instanceKey)?.unshift(iterationData)
              const c = produceChildren(iterationData)
              // Ensure our instance key never changed during runtime
              if (slotData) instanceScopes.get(instanceKey)?.shift()
              if (iterationData) instanceScopes.get(instanceKey)?.shift()
              instanceKey = currentKey
              return c as RenderableList
            },
          }
        }
        children.slot = true
      } else {
        // If we dont have any children, we still need to provide an object
        // instead of an empty array (which raises a warning in vue)
        children = () => ({})
      }
    }

    // Compile the for loop down
    if ('for' in node && node.for) {
      const values = node.for.length === 3 ? node.for[2] : node.for[1]
      const getValues =
        typeof values === 'string' && values.startsWith('$')
          ? provider(compile(values))
          : () => values
      iterator = [
        getValues,
        node.for[0],
        node.for.length === 3 ? String(node.for[1]) : null,
      ]
    }
    return [condition, element, attrs, children, alternate, iterator, resolve]
  }

  /**
   * Given a particular function that produces children, ensure that the second
   * argument of all these slots is the original instance key being used to
   * render the slots.
   * @param children - The children() function that will produce slots
   */
  function createSlots(
    children: RenderChildren,
    iterationData?: Record<string, unknown>
  ): RenderableSlots | null {
    const slots = children(iterationData) as RenderableSlots
    const currentKey = instanceKey
    return Object.keys(slots).reduce((allSlots, slotName) => {
      const slotFn = slots && slots[slotName]
      allSlots[slotName] = (data?: Record<string, any>) => {
        return (slotFn && slotFn(data, currentKey)) || null
      }
      return allSlots
    }, {} as RenderableSlots)
  }

  /**
   * Creates an element
   * @param data - The context data available to the node
   * @param node - The schema node to render
   * @returns
   */
  function createElement(
    library: FormKitComponentLibrary,
    node: FormKitSchemaNode
  ): RenderNodes {
    // Parses the schema node into pertinent parts
    const [condition, element, attrs, children, alternate, iterator, resolve] =
      parseNode(library, node)
    // This is a sub-render function (called within a render function). It must
    // only use pre-compiled features, and be organized in the most efficient
    // manner possible.
    let createNodes: RenderNodes = ((
      iterationData?: Record<string, unknown>
    ) => {
      if (condition && element === null && children) {
        // Handle conditional if/then statements
        return condition()
          ? children(iterationData)
          : alternate && alternate(iterationData)
      }

      if (element && (!condition || condition())) {
        // handle text nodes
        if (element === 'text' && children) {
          return createTextVNode(String(children()))
        }
        // Handle lone slots
        if (element === 'slot' && children) return children(iterationData)
        // Handle resolving components
        const el = resolve ? resolveComponent(element as string) : element
        // If we are rendering slots as children, ensure their instanceKey is properly added
        const slots: RenderableSlots | null = children?.slot
          ? createSlots(children, iterationData)
          : null
        // Handle dom elements and components
        return h(
          el,
          attrs(),
          (slots || (children ? children(iterationData) : [])) as Renderable[]
        )
      }

      return typeof alternate === 'function'
        ? alternate(iterationData)
        : alternate
    }) as RenderNodes

    if (iterator) {
      const repeatedNode = createNodes
      const [getValues, valueName, keyName] = iterator
      createNodes = (() => {
        const _v = getValues()
        const values = !isNaN(_v as number)
          ? Array(Number(_v))
              .fill(0)
              .map((_, i) => i)
          : _v
        const fragment = []
        if (typeof values !== 'object') return null
        const instanceScope = instanceScopes.get(instanceKey) || []
        for (const key in values) {
          const iterationData: Record<string, unknown> = Object.defineProperty(
            {
              ...instanceScope.reduce(
                (
                  previousIterationData: Record<string, undefined>,
                  scopedData: Record<string, undefined>
                ) => {
                  if (previousIterationData.__idata) {
                    return { ...previousIterationData, ...scopedData }
                  }
                  return scopedData
                },
                {} as Record<string, undefined>
              ),
              [valueName]: values[key],
              ...(keyName !== null ? { [keyName]: key } : {}),
            },
            '__idata',
            { enumerable: false, value: true }
          )
          instanceScope.unshift(iterationData)
          fragment.push(repeatedNode.bind(null, iterationData)())
          instanceScope.shift()
        }
        return fragment
      }) as RenderNodes
    }
    return createNodes as RenderNodes
  }

  /**
   * Given a schema, parse it and return the resulting renderable nodes.
   * @param data - The schema context object
   * @param library - The available components
   * @param node - The node to parse
   * @returns
   */
  function createElements(
    library: FormKitComponentLibrary,
    schema: FormKitSchemaNode | FormKitSchemaNode[]
  ): RenderChildren {
    if (Array.isArray(schema)) {
      const els = schema.map(createElement.bind(null, library))
      return (iterationData?: Record<string, unknown>) =>
        els.map((element) => element(iterationData))
    }
    // Single node to render
    const element = createElement(library, schema)
    return (iterationData?: Record<string, unknown>) => element(iterationData)
  }

  /**
   * Data providers produced as a result of the compiler.
   */
  const providers: ProviderRegistry = []

  /**
   * Append the requisite compiler provider and return the compiled function.
   * @param compiled - A compiled function
   * @returns
   */
  function provider(
    compiled: FormKitCompilerOutput,
    hints: Record<string, boolean> = {}
  ) {
    const compiledFns: Record<symbol, FormKitCompilerOutput> = {}
    providers.push((callback: SchemaProviderCallback, key: symbol) => {
      compiledFns[key] = compiled.provide((tokens) => callback(tokens, hints))
    })
    return () => compiledFns[instanceKey]()
  }

  /**
   * Creates a new instance of a given schema — this either comes from a
   * memoized copy of the parsed schema or a freshly parsed version. An symbol
   * instance key, and dataProvider functions are passed in.
   * @param providerCallback - A function that is called for each required provider
   * @param key - a symbol representing the current instance
   */
  return function createInstance(
    providerCallback: SchemaProviderCallback,
    key
  ) {
    const memoKey = JSON.stringify(schema)
    const [render, compiledProviders] = has(memo, memoKey)
      ? memo[memoKey]
      : [createElements(library, schema), providers]
    memo[memoKey] = [render, compiledProviders]
    compiledProviders.forEach((compiledProvider) => {
      compiledProvider(providerCallback, key)
    })
    return () => {
      instanceKey = key
      return render()
    }
  }
}