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76x 76x 76x 76x 76x 76x 76x 76x 76x 76x 76x 13x 76x 1x 1x 1x 1x 76x 62x 11x 11x 51x 76x 76x 292x 292x 292x 292x 1x 292x 292x 3x 292x 1x 1x 1x 1x 1x 292x 292x 6x 292x 292x 292x 292x 292x 292x 74x 292x 207x 207x 1x 18x 18x 18x 18x 18x 18x 36x 36x 36x 36x 36x 36x 36x 36x 36x 1837x 1837x 1837x 1837x 1837x 1837x 1837x 1837x 1837x 1837x 1837x 1837x 1837x 36x 36x 18x 18x 18x 18x 18x 18x | import {
BindingTypes,
UNREF,
isFunctionType,
unwrapTSNode,
walkIdentifiers,
} from '@vue/compiler-dom'
import {
DEFAULT_FILENAME,
type SFCDescriptor,
type SFCScriptBlock,
} from './parse'
import type { ParserPlugin } from '@babel/parser'
import { generateCodeFrame } from '@vue/shared'
import type {
ArrayPattern,
CallExpression,
Declaration,
ExportSpecifier,
Identifier,
Node,
ObjectPattern,
Statement,
} from '@babel/types'
import { walk } from 'estree-walker'
import {
type RawSourceMap,
SourceMapConsumer,
SourceMapGenerator,
} from 'source-map-js'
import {
normalScriptDefaultVar,
processNormalScript,
} from './script/normalScript'
import { CSS_VARS_HELPER, genCssVarsCode } from './style/cssVars'
import {
type SFCTemplateCompileOptions,
compileTemplate,
} from './compileTemplate'
import { warnOnce } from './warn'
import { transformDestructuredProps } from './script/definePropsDestructure'
import { ScriptCompileContext } from './script/context'
import {
DEFINE_PROPS,
WITH_DEFAULTS,
genRuntimeProps,
processDefineProps,
} from './script/defineProps'
import {
DEFINE_EMITS,
genRuntimeEmits,
processDefineEmits,
} from './script/defineEmits'
import { DEFINE_EXPOSE, processDefineExpose } from './script/defineExpose'
import { DEFINE_OPTIONS, processDefineOptions } from './script/defineOptions'
import { DEFINE_SLOTS, processDefineSlots } from './script/defineSlots'
import { DEFINE_MODEL, processDefineModel } from './script/defineModel'
import { getImportedName, isCallOf, isLiteralNode } from './script/utils'
import { analyzeScriptBindings } from './script/analyzeScriptBindings'
import { isImportUsed } from './script/importUsageCheck'
import { processAwait } from './script/topLevelAwait'
export interface SFCScriptCompileOptions {
/**
* Scope ID for prefixing injected CSS variables.
* This must be consistent with the `id` passed to `compileStyle`.
*/
id: string
/**
* Production mode. Used to determine whether to generate hashed CSS variables
*/
isProd?: boolean
/**
* Enable/disable source map. Defaults to true.
*/
sourceMap?: boolean
/**
* https://babeljs.io/docs/en/babel-parser#plugins
*/
babelParserPlugins?: ParserPlugin[]
/**
* A list of files to parse for global types to be made available for type
* resolving in SFC macros. The list must be fully resolved file system paths.
*/
globalTypeFiles?: string[]
/**
* Compile the template and inline the resulting render function
* directly inside setup().
* - Only affects `<script setup>`
* - This should only be used in production because it prevents the template
* from being hot-reloaded separately from component state.
*/
inlineTemplate?: boolean
/**
* Generate the final component as a variable instead of default export.
* This is useful in e.g. @vitejs/plugin-vue where the script needs to be
* placed inside the main module.
*/
genDefaultAs?: string
/**
* Options for template compilation when inlining. Note these are options that
* would normally be passed to `compiler-sfc`'s own `compileTemplate()`, not
* options passed to `compiler-dom`.
*/
templateOptions?: Partial<SFCTemplateCompileOptions>
/**
* Hoist <script setup> static constants.
* - Only enables when one `<script setup>` exists.
* @default true
*/
hoistStatic?: boolean
/**
* Set to `false` to disable reactive destructure for `defineProps` (pre-3.5
* behavior), or set to `'error'` to throw hard error on props destructures.
* @default true
*/
propsDestructure?: boolean | 'error'
/**
* File system access methods to be used when resolving types
* imported in SFC macros. Defaults to ts.sys in Node.js, can be overwritten
* to use a virtual file system for use in browsers (e.g. in REPLs)
*/
fs?: {
fileExists(file: string): boolean
readFile(file: string): string | undefined
realpath?(file: string): string
}
/**
* Transform Vue SFCs into custom elements.
*/
customElement?: boolean | ((filename: string) => boolean)
}
export interface ImportBinding {
isType: boolean
imported: string
local: string
source: string
isFromSetup: boolean
isUsedInTemplate: boolean
}
const MACROS = [
DEFINE_PROPS,
DEFINE_EMITS,
DEFINE_EXPOSE,
DEFINE_OPTIONS,
DEFINE_SLOTS,
DEFINE_MODEL,
WITH_DEFAULTS,
]
/**
* Compile `<script setup>`
* It requires the whole SFC descriptor because we need to handle and merge
* normal `<script>` + `<script setup>` if both are present.
*/
export function compileScript(
sfc: SFCDescriptor,
options: SFCScriptCompileOptions,
): SFCScriptBlock {
if (!options.id) {
warnOnce(
`compileScript now requires passing the \`id\` option.\n` +
`Upgrade your vite or vue-loader version for compatibility with ` +
`the latest experimental proposals.`,
)
}
const ctx = new ScriptCompileContext(sfc, options)
const { script, scriptSetup, source, filename } = sfc
const hoistStatic = options.hoistStatic !== false && !script
const scopeId = options.id ? options.id.replace(/^data-v-/, '') : ''
const scriptLang = script && script.lang
const scriptSetupLang = scriptSetup && scriptSetup.lang
if (!scriptSetup) {
if (!script) {
throw new Error(`[@vue/compiler-sfc] SFC contains no <script> tags.`)
}
// normal <script> only
return processNormalScript(ctx, scopeId)
}
if (script && scriptLang !== scriptSetupLang) {
throw new Error(
`[@vue/compiler-sfc] <script> and <script setup> must have the same ` +
`language type.`,
)
}
if (scriptSetupLang && !ctx.isJS && !ctx.isTS) {
// do not process non js/ts script blocks
return scriptSetup
}
// metadata that needs to be returned
// const ctx.bindingMetadata: BindingMetadata = {}
const scriptBindings: Record<string, BindingTypes> = Object.create(null)
const setupBindings: Record<string, BindingTypes> = Object.create(null)
let defaultExport: Node | undefined
let hasAwait = false
let hasInlinedSsrRenderFn = false
// string offsets
const startOffset = ctx.startOffset!
const endOffset = ctx.endOffset!
const scriptStartOffset = script && script.loc.start.offset
const scriptEndOffset = script && script.loc.end.offset
function hoistNode(node: Statement) {
const start = node.start! + startOffset
let end = node.end! + startOffset
// locate comment
if (node.trailingComments && node.trailingComments.length > 0) {
const lastCommentNode =
node.trailingComments[node.trailingComments.length - 1]
end = lastCommentNode.end! + startOffset
}
// locate the end of whitespace between this statement and the next
while (end <= source.length) {
if (!/\s/.test(source.charAt(end))) {
break
}
end++
}
ctx.s.move(start, end, 0)
}
function registerUserImport(
source: string,
local: string,
imported: string,
isType: boolean,
isFromSetup: boolean,
needTemplateUsageCheck: boolean,
) {
// template usage check is only needed in non-inline mode, so we can skip
// the work if inlineTemplate is true.
let isUsedInTemplate = needTemplateUsageCheck
if (
needTemplateUsageCheck &&
ctx.isTS &&
sfc.template &&
!sfc.template.src &&
!sfc.template.lang
) {
isUsedInTemplate = isImportUsed(local, sfc)
}
ctx.userImports[local] = {
isType,
imported,
local,
source,
isFromSetup,
isUsedInTemplate,
}
}
function checkInvalidScopeReference(node: Node | undefined, method: string) {
if (!node) return
walkIdentifiers(node, id => {
const binding = setupBindings[id.name]
if (binding && binding !== BindingTypes.LITERAL_CONST) {
ctx.error(
`\`${method}()\` in <script setup> cannot reference locally ` +
`declared variables because it will be hoisted outside of the ` +
`setup() function. If your component options require initialization ` +
`in the module scope, use a separate normal <script> to export ` +
`the options instead.`,
id,
)
}
})
}
const scriptAst = ctx.scriptAst
const scriptSetupAst = ctx.scriptSetupAst!
// 1.1 walk import declarations of <script>
if (scriptAst) {
for (const node of scriptAst.body) {
if (node.type === 'ImportDeclaration') {
// record imports for dedupe
for (const specifier of node.specifiers) {
const imported = getImportedName(specifier)
registerUserImport(
node.source.value,
specifier.local.name,
imported,
node.importKind === 'type' ||
(specifier.type === 'ImportSpecifier' &&
specifier.importKind === 'type'),
false,
!options.inlineTemplate,
)
}
}
}
}
// 1.2 walk import declarations of <script setup>
for (const node of scriptSetupAst.body) {
if (node.type === 'ImportDeclaration') {
// import declarations are moved to top
hoistNode(node)
// dedupe imports
let removed = 0
const removeSpecifier = (i: number) => {
const removeLeft = i > removed
removed++
const current = node.specifiers[i]
const next = node.specifiers[i + 1]
ctx.s.remove(
removeLeft
? node.specifiers[i - 1].end! + startOffset
: current.start! + startOffset,
next && !removeLeft
? next.start! + startOffset
: current.end! + startOffset,
)
}
for (let i = 0; i < node.specifiers.length; i++) {
const specifier = node.specifiers[i]
const local = specifier.local.name
const imported = getImportedName(specifier)
const source = node.source.value
const existing = ctx.userImports[local]
if (source === 'vue' && MACROS.includes(imported)) {
if (local === imported) {
warnOnce(
`\`${imported}\` is a compiler macro and no longer needs to be imported.`,
)
} else {
ctx.error(
`\`${imported}\` is a compiler macro and cannot be aliased to ` +
`a different name.`,
specifier,
)
}
removeSpecifier(i)
} else if (existing) {
if (existing.source === source && existing.imported === imported) {
// already imported in <script setup>, dedupe
removeSpecifier(i)
} else {
ctx.error(
`different imports aliased to same local name.`,
specifier,
)
}
} else {
registerUserImport(
source,
local,
imported,
node.importKind === 'type' ||
(specifier.type === 'ImportSpecifier' &&
specifier.importKind === 'type'),
true,
!options.inlineTemplate,
)
}
}
if (node.specifiers.length && removed === node.specifiers.length) {
ctx.s.remove(node.start! + startOffset, node.end! + startOffset)
}
}
}
// 1.3 resolve possible user import alias of `ref` and `reactive`
const vueImportAliases: Record<string, string> = {}
for (const key in ctx.userImports) {
const { source, imported, local } = ctx.userImports[key]
if (source === 'vue') vueImportAliases[imported] = local
}
// 2.1 process normal <script> body
if (script && scriptAst) {
for (const node of scriptAst.body) {
if (node.type === 'ExportDefaultDeclaration') {
// export default
defaultExport = node
// check if user has manually specified `name` or 'render` option in
// export default
// if has name, skip name inference
// if has render and no template, generate return object instead of
// empty render function (#4980)
let optionProperties
if (defaultExport.declaration.type === 'ObjectExpression') {
optionProperties = defaultExport.declaration.properties
} else if (
defaultExport.declaration.type === 'CallExpression' &&
defaultExport.declaration.arguments[0] &&
defaultExport.declaration.arguments[0].type === 'ObjectExpression'
) {
optionProperties = defaultExport.declaration.arguments[0].properties
}
if (optionProperties) {
for (const p of optionProperties) {
if (
p.type === 'ObjectProperty' &&
p.key.type === 'Identifier' &&
p.key.name === 'name'
) {
ctx.hasDefaultExportName = true
}
if (
(p.type === 'ObjectMethod' || p.type === 'ObjectProperty') &&
p.key.type === 'Identifier' &&
p.key.name === 'render'
) {
// TODO warn when we provide a better way to do it?
ctx.hasDefaultExportRender = true
}
}
}
// export default { ... } --> const __default__ = { ... }
const start = node.start! + scriptStartOffset!
const end = node.declaration.start! + scriptStartOffset!
ctx.s.overwrite(start, end, `const ${normalScriptDefaultVar} = `)
} else if (node.type === 'ExportNamedDeclaration') {
const defaultSpecifier = node.specifiers.find(
s =>
s.exported.type === 'Identifier' && s.exported.name === 'default',
) as ExportSpecifier
if (defaultSpecifier) {
defaultExport = node
// 1. remove specifier
if (node.specifiers.length > 1) {
ctx.s.remove(
defaultSpecifier.start! + scriptStartOffset!,
defaultSpecifier.end! + scriptStartOffset!,
)
} else {
ctx.s.remove(
node.start! + scriptStartOffset!,
node.end! + scriptStartOffset!,
)
}
if (node.source) {
// export { x as default } from './x'
// rewrite to `import { x as __default__ } from './x'` and
// add to top
ctx.s.prepend(
`import { ${defaultSpecifier.local.name} as ${normalScriptDefaultVar} } from '${node.source.value}'\n`,
)
} else {
// export { x as default }
// rewrite to `const __default__ = x` and move to end
ctx.s.appendLeft(
scriptEndOffset!,
`\nconst ${normalScriptDefaultVar} = ${defaultSpecifier.local.name}\n`,
)
}
}
if (node.declaration) {
walkDeclaration(
'script',
node.declaration,
scriptBindings,
vueImportAliases,
hoistStatic,
)
}
} else if (
(node.type === 'VariableDeclaration' ||
node.type === 'FunctionDeclaration' ||
node.type === 'ClassDeclaration' ||
node.type === 'TSEnumDeclaration') &&
!node.declare
) {
walkDeclaration(
'script',
node,
scriptBindings,
vueImportAliases,
hoistStatic,
)
}
}
// <script> after <script setup>
// we need to move the block up so that `const __default__` is
// declared before being used in the actual component definition
if (scriptStartOffset! > startOffset) {
// if content doesn't end with newline, add one
if (!/\n$/.test(script.content.trim())) {
ctx.s.appendLeft(scriptEndOffset!, `\n`)
}
ctx.s.move(scriptStartOffset!, scriptEndOffset!, 0)
}
}
// 2.2 process <script setup> body
for (const node of scriptSetupAst.body) {
if (node.type === 'ExpressionStatement') {
const expr = unwrapTSNode(node.expression)
// process `defineProps` and `defineEmit(s)` calls
if (
processDefineProps(ctx, expr) ||
processDefineEmits(ctx, expr) ||
processDefineOptions(ctx, expr) ||
processDefineSlots(ctx, expr)
) {
ctx.s.remove(node.start! + startOffset, node.end! + startOffset)
} else if (processDefineExpose(ctx, expr)) {
// defineExpose({}) -> expose({})
const callee = (expr as CallExpression).callee
ctx.s.overwrite(
callee.start! + startOffset,
callee.end! + startOffset,
'__expose',
)
} else {
processDefineModel(ctx, expr)
}
}
if (node.type === 'VariableDeclaration' && !node.declare) {
const total = node.declarations.length
let left = total
let lastNonRemoved: number | undefined
for (let i = 0; i < total; i++) {
const decl = node.declarations[i]
const init = decl.init && unwrapTSNode(decl.init)
if (init) {
if (processDefineOptions(ctx, init)) {
ctx.error(
`${DEFINE_OPTIONS}() has no returning value, it cannot be assigned.`,
node,
)
}
// defineProps
const isDefineProps = processDefineProps(ctx, init, decl.id)
if (ctx.propsDestructureRestId) {
setupBindings[ctx.propsDestructureRestId] =
BindingTypes.SETUP_REACTIVE_CONST
}
// defineEmits
const isDefineEmits =
!isDefineProps && processDefineEmits(ctx, init, decl.id)
!isDefineEmits &&
(processDefineSlots(ctx, init, decl.id) ||
processDefineModel(ctx, init, decl.id))
if (
isDefineProps &&
!ctx.propsDestructureRestId &&
ctx.propsDestructureDecl
) {
if (left === 1) {
ctx.s.remove(node.start! + startOffset, node.end! + startOffset)
} else {
let start = decl.start! + startOffset
let end = decl.end! + startOffset
if (i === total - 1) {
// last one, locate the end of the last one that is not removed
// if we arrive at this branch, there must have been a
// non-removed decl before us, so lastNonRemoved is non-null.
start = node.declarations[lastNonRemoved!].end! + startOffset
} else {
// not the last one, locate the start of the next
end = node.declarations[i + 1].start! + startOffset
}
ctx.s.remove(start, end)
left--
}
} else if (isDefineEmits) {
ctx.s.overwrite(
startOffset + init.start!,
startOffset + init.end!,
'__emit',
)
} else {
lastNonRemoved = i
}
}
}
}
let isAllLiteral = false
// walk declarations to record declared bindings
if (
(node.type === 'VariableDeclaration' ||
node.type === 'FunctionDeclaration' ||
node.type === 'ClassDeclaration' ||
node.type === 'TSEnumDeclaration') &&
!node.declare
) {
isAllLiteral = walkDeclaration(
'scriptSetup',
node,
setupBindings,
vueImportAliases,
hoistStatic,
!!ctx.propsDestructureDecl,
)
}
// hoist literal constants
if (hoistStatic && isAllLiteral) {
hoistNode(node)
}
// walk statements & named exports / variable declarations for top level
// await
if (
(node.type === 'VariableDeclaration' && !node.declare) ||
node.type.endsWith('Statement')
) {
const scope: Statement[][] = [scriptSetupAst.body]
walk(node, {
enter(child: Node, parent: Node | null) {
if (isFunctionType(child)) {
this.skip()
}
if (child.type === 'BlockStatement') {
scope.push(child.body)
}
if (child.type === 'AwaitExpression') {
hasAwait = true
// if the await expression is an expression statement and
// - is in the root scope
// - or is not the first statement in a nested block scope
// then it needs a semicolon before the generated code.
const currentScope = scope[scope.length - 1]
const needsSemi = currentScope.some((n, i) => {
return (
(scope.length === 1 || i > 0) &&
n.type === 'ExpressionStatement' &&
n.start === child.start
)
})
processAwait(
ctx,
child,
needsSemi,
parent!.type === 'ExpressionStatement',
)
}
},
exit(node: Node) {
if (node.type === 'BlockStatement') scope.pop()
},
})
}
if (
(node.type === 'ExportNamedDeclaration' && node.exportKind !== 'type') ||
node.type === 'ExportAllDeclaration' ||
node.type === 'ExportDefaultDeclaration'
) {
ctx.error(
`<script setup> cannot contain ES module exports. ` +
`If you are using a previous version of <script setup>, please ` +
`consult the updated RFC at https://github.com/vuejs/rfcs/pull/227.`,
node,
)
}
if (ctx.isTS) {
// move all Type declarations to outer scope
if (
node.type.startsWith('TS') ||
(node.type === 'ExportNamedDeclaration' &&
node.exportKind === 'type') ||
(node.type === 'VariableDeclaration' && node.declare)
) {
if (node.type !== 'TSEnumDeclaration') {
hoistNode(node)
}
}
}
}
// 3 props destructure transform
if (ctx.propsDestructureDecl) {
transformDestructuredProps(ctx, vueImportAliases)
}
// 4. check macro args to make sure it doesn't reference setup scope
// variables
checkInvalidScopeReference(ctx.propsRuntimeDecl, DEFINE_PROPS)
checkInvalidScopeReference(ctx.propsRuntimeDefaults, DEFINE_PROPS)
checkInvalidScopeReference(ctx.propsDestructureDecl, DEFINE_PROPS)
checkInvalidScopeReference(ctx.emitsRuntimeDecl, DEFINE_EMITS)
checkInvalidScopeReference(ctx.optionsRuntimeDecl, DEFINE_OPTIONS)
for (const { runtimeOptionNodes } of Object.values(ctx.modelDecls)) {
for (const node of runtimeOptionNodes) {
checkInvalidScopeReference(node, DEFINE_MODEL)
}
}
// 5. remove non-script content
if (script) {
if (startOffset < scriptStartOffset!) {
// <script setup> before <script>
ctx.s.remove(0, startOffset)
ctx.s.remove(endOffset, scriptStartOffset!)
ctx.s.remove(scriptEndOffset!, source.length)
} else {
// <script> before <script setup>
ctx.s.remove(0, scriptStartOffset!)
ctx.s.remove(scriptEndOffset!, startOffset)
ctx.s.remove(endOffset, source.length)
}
} else {
// only <script setup>
ctx.s.remove(0, startOffset)
ctx.s.remove(endOffset, source.length)
}
// 6. analyze binding metadata
// `defineProps` & `defineModel` also register props bindings
if (scriptAst) {
Object.assign(ctx.bindingMetadata, analyzeScriptBindings(scriptAst.body))
}
for (const [key, { isType, imported, source }] of Object.entries(
ctx.userImports,
)) {
if (isType) continue
ctx.bindingMetadata[key] =
imported === '*' ||
(imported === 'default' && source.endsWith('.vue')) ||
source === 'vue'
? BindingTypes.SETUP_CONST
: BindingTypes.SETUP_MAYBE_REF
}
for (const key in scriptBindings) {
ctx.bindingMetadata[key] = scriptBindings[key]
}
for (const key in setupBindings) {
ctx.bindingMetadata[key] = setupBindings[key]
}
// 7. inject `useCssVars` calls
if (
sfc.cssVars.length &&
// no need to do this when targeting SSR
!options.templateOptions?.ssr
) {
ctx.helperImports.add(CSS_VARS_HELPER)
ctx.helperImports.add('unref')
ctx.s.prependLeft(
startOffset,
`\n${genCssVarsCode(
sfc.cssVars,
ctx.bindingMetadata,
scopeId,
!!options.isProd,
)}\n`,
)
}
// 8. finalize setup() argument signature
let args = `__props`
if (ctx.propsTypeDecl) {
// mark as any and only cast on assignment
// since the user defined complex types may be incompatible with the
// inferred type from generated runtime declarations
args += `: any`
}
// inject user assignment of props
// we use a default __props so that template expressions referencing props
// can use it directly
if (ctx.propsDecl) {
if (ctx.propsDestructureRestId) {
ctx.s.overwrite(
startOffset + ctx.propsCall!.start!,
startOffset + ctx.propsCall!.end!,
`${ctx.helper(`createPropsRestProxy`)}(__props, ${JSON.stringify(
Object.keys(ctx.propsDestructuredBindings),
)})`,
)
ctx.s.overwrite(
startOffset + ctx.propsDestructureDecl!.start!,
startOffset + ctx.propsDestructureDecl!.end!,
ctx.propsDestructureRestId,
)
} else if (!ctx.propsDestructureDecl) {
ctx.s.overwrite(
startOffset + ctx.propsCall!.start!,
startOffset + ctx.propsCall!.end!,
'__props',
)
}
}
// inject temp variables for async context preservation
if (hasAwait) {
const any = ctx.isTS ? `: any` : ``
ctx.s.prependLeft(startOffset, `\nlet __temp${any}, __restore${any}\n`)
}
const destructureElements =
ctx.hasDefineExposeCall || !options.inlineTemplate
? [`expose: __expose`]
: []
if (ctx.emitDecl) {
destructureElements.push(`emit: __emit`)
}
if (destructureElements.length) {
args += `, { ${destructureElements.join(', ')} }`
}
let templateMap
// 9. generate return statement
let returned
if (
!options.inlineTemplate ||
(!sfc.template && ctx.hasDefaultExportRender)
) {
// non-inline mode, or has manual render in normal <script>
// return bindings from script and script setup
const allBindings: Record<string, any> = {
...scriptBindings,
...setupBindings,
}
for (const key in ctx.userImports) {
if (
!ctx.userImports[key].isType &&
ctx.userImports[key].isUsedInTemplate
) {
allBindings[key] = true
}
}
returned = `{ `
for (const key in allBindings) {
if (
allBindings[key] === true &&
ctx.userImports[key].source !== 'vue' &&
!ctx.userImports[key].source.endsWith('.vue')
) {
// generate getter for import bindings
// skip vue imports since we know they will never change
returned += `get ${key}() { return ${key} }, `
} else if (ctx.bindingMetadata[key] === BindingTypes.SETUP_LET) {
// local let binding, also add setter
const setArg = key === 'v' ? `_v` : `v`
returned +=
`get ${key}() { return ${key} }, ` +
`set ${key}(${setArg}) { ${key} = ${setArg} }, `
} else {
returned += `${key}, `
}
}
returned = returned.replace(/, $/, '') + ` }`
} else {
// inline mode
if (sfc.template && !sfc.template.src) {
if (options.templateOptions && options.templateOptions.ssr) {
hasInlinedSsrRenderFn = true
}
// inline render function mode - we are going to compile the template and
// inline it right here
const { code, ast, preamble, tips, errors, map } = compileTemplate({
filename,
ast: sfc.template.ast,
source: sfc.template.content,
inMap: sfc.template.map,
...options.templateOptions,
id: scopeId,
scoped: sfc.styles.some(s => s.scoped),
isProd: options.isProd,
ssrCssVars: sfc.cssVars,
compilerOptions: {
...(options.templateOptions &&
options.templateOptions.compilerOptions),
inline: true,
isTS: ctx.isTS,
bindingMetadata: ctx.bindingMetadata,
},
})
templateMap = map
if (tips.length) {
tips.forEach(warnOnce)
}
const err = errors[0]
if (typeof err === 'string') {
throw new Error(err)
} else if (err) {
if (err.loc) {
err.message +=
`\n\n` +
sfc.filename +
'\n' +
generateCodeFrame(
source,
err.loc.start.offset,
err.loc.end.offset,
) +
`\n`
}
throw err
}
if (preamble) {
ctx.s.prepend(preamble)
}
// avoid duplicated unref import
// as this may get injected by the render function preamble OR the
// css vars codegen
if (ast && ast.helpers.has(UNREF)) {
ctx.helperImports.delete('unref')
}
returned = code
} else {
returned = `() => {}`
}
}
if (!options.inlineTemplate && !__TEST__) {
// in non-inline mode, the `__isScriptSetup: true` flag is used by
// componentPublicInstance proxy to allow properties that start with $ or _
ctx.s.appendRight(
endOffset,
`\nconst __returned__ = ${returned}\n` +
`Object.defineProperty(__returned__, '__isScriptSetup', { enumerable: false, value: true })\n` +
`return __returned__` +
`\n}\n\n`,
)
} else {
ctx.s.appendRight(endOffset, `\nreturn ${returned}\n}\n\n`)
}
// 10. finalize default export
const genDefaultAs = options.genDefaultAs
? `const ${options.genDefaultAs} =`
: `export default`
let runtimeOptions = ``
if (!ctx.hasDefaultExportName && filename && filename !== DEFAULT_FILENAME) {
const match = filename.match(/([^/\\]+)\.\w+$/)
if (match) {
runtimeOptions += `\n __name: '${match[1]}',`
}
}
if (hasInlinedSsrRenderFn) {
runtimeOptions += `\n __ssrInlineRender: true,`
}
const propsDecl = genRuntimeProps(ctx)
if (propsDecl) runtimeOptions += `\n props: ${propsDecl},`
const emitsDecl = genRuntimeEmits(ctx)
if (emitsDecl) runtimeOptions += `\n emits: ${emitsDecl},`
let definedOptions = ''
if (ctx.optionsRuntimeDecl) {
definedOptions = scriptSetup.content
.slice(ctx.optionsRuntimeDecl.start!, ctx.optionsRuntimeDecl.end!)
.trim()
}
// <script setup> components are closed by default. If the user did not
// explicitly call `defineExpose`, call expose() with no args.
const exposeCall =
ctx.hasDefineExposeCall || options.inlineTemplate ? `` : ` __expose();\n`
// wrap setup code with function.
if (ctx.isTS) {
// for TS, make sure the exported type is still valid type with
// correct props information
// we have to use object spread for types to be merged properly
// user's TS setting should compile it down to proper targets
// export default defineComponent({ ...__default__, ... })
const def =
(defaultExport ? `\n ...${normalScriptDefaultVar},` : ``) +
(definedOptions ? `\n ...${definedOptions},` : '')
ctx.s.prependLeft(
startOffset,
`\n${genDefaultAs} /*@__PURE__*/${ctx.helper(
`defineComponent`,
)}({${def}${runtimeOptions}\n ${
hasAwait ? `async ` : ``
}setup(${args}) {\n${exposeCall}`,
)
ctx.s.appendRight(endOffset, `})`)
} else {
if (defaultExport || definedOptions) {
// without TS, can't rely on rest spread, so we use Object.assign
// export default Object.assign(__default__, { ... })
ctx.s.prependLeft(
startOffset,
`\n${genDefaultAs} /*@__PURE__*/Object.assign(${
defaultExport ? `${normalScriptDefaultVar}, ` : ''
}${definedOptions ? `${definedOptions}, ` : ''}{${runtimeOptions}\n ` +
`${hasAwait ? `async ` : ``}setup(${args}) {\n${exposeCall}`,
)
ctx.s.appendRight(endOffset, `})`)
} else {
ctx.s.prependLeft(
startOffset,
`\n${genDefaultAs} {${runtimeOptions}\n ` +
`${hasAwait ? `async ` : ``}setup(${args}) {\n${exposeCall}`,
)
ctx.s.appendRight(endOffset, `}`)
}
}
// 11. finalize Vue helper imports
if (ctx.helperImports.size > 0) {
const runtimeModuleName =
options.templateOptions?.compilerOptions?.runtimeModuleName
const importSrc = runtimeModuleName
? JSON.stringify(runtimeModuleName)
: `'vue'`
ctx.s.prepend(
`import { ${[...ctx.helperImports]
.map(h => `${h} as _${h}`)
.join(', ')} } from ${importSrc}\n`,
)
}
const content = ctx.s.toString()
let map =
options.sourceMap !== false
? (ctx.s.generateMap({
source: filename,
hires: true,
includeContent: true,
}) as unknown as RawSourceMap)
: undefined
// merge source maps of the script setup and template in inline mode
if (templateMap && map) {
const offset = content.indexOf(returned)
const templateLineOffset =
content.slice(0, offset).split(/\r?\n/).length - 1
map = mergeSourceMaps(map, templateMap, templateLineOffset)
}
return {
...scriptSetup,
bindings: ctx.bindingMetadata,
imports: ctx.userImports,
content,
map,
scriptAst: scriptAst?.body,
scriptSetupAst: scriptSetupAst?.body,
deps: ctx.deps ? [...ctx.deps] : undefined,
}
}
function registerBinding(
bindings: Record<string, BindingTypes>,
node: Identifier,
type: BindingTypes,
) {
bindings[node.name] = type
}
function walkDeclaration(
from: 'script' | 'scriptSetup',
node: Declaration,
bindings: Record<string, BindingTypes>,
userImportAliases: Record<string, string>,
hoistStatic: boolean,
isPropsDestructureEnabled = false,
): boolean {
let isAllLiteral = false
if (node.type === 'VariableDeclaration') {
const isConst = node.kind === 'const'
isAllLiteral =
isConst &&
node.declarations.every(
decl => decl.id.type === 'Identifier' && isStaticNode(decl.init!),
)
// export const foo = ...
for (const { id, init: _init } of node.declarations) {
const init = _init && unwrapTSNode(_init)
const isConstMacroCall =
isConst &&
isCallOf(
init,
c =>
c === DEFINE_PROPS ||
c === DEFINE_EMITS ||
c === WITH_DEFAULTS ||
c === DEFINE_SLOTS,
)
if (id.type === 'Identifier') {
let bindingType
const userReactiveBinding = userImportAliases['reactive']
if (
(hoistStatic || from === 'script') &&
(isAllLiteral || (isConst && isStaticNode(init!)))
) {
bindingType = BindingTypes.LITERAL_CONST
} else if (isCallOf(init, userReactiveBinding)) {
// treat reactive() calls as let since it's meant to be mutable
bindingType = isConst
? BindingTypes.SETUP_REACTIVE_CONST
: BindingTypes.SETUP_LET
} else if (
// if a declaration is a const literal, we can mark it so that
// the generated render fn code doesn't need to unref() it
isConstMacroCall ||
(isConst && canNeverBeRef(init!, userReactiveBinding))
) {
bindingType = isCallOf(init, DEFINE_PROPS)
? BindingTypes.SETUP_REACTIVE_CONST
: BindingTypes.SETUP_CONST
} else if (isConst) {
if (
isCallOf(
init,
m =>
m === userImportAliases['ref'] ||
m === userImportAliases['computed'] ||
m === userImportAliases['shallowRef'] ||
m === userImportAliases['customRef'] ||
m === userImportAliases['toRef'] ||
m === userImportAliases['useTemplateRef'] ||
m === DEFINE_MODEL,
)
) {
bindingType = BindingTypes.SETUP_REF
} else {
bindingType = BindingTypes.SETUP_MAYBE_REF
}
} else {
bindingType = BindingTypes.SETUP_LET
}
registerBinding(bindings, id, bindingType)
} else {
if (isCallOf(init, DEFINE_PROPS) && isPropsDestructureEnabled) {
continue
}
if (id.type === 'ObjectPattern') {
walkObjectPattern(id, bindings, isConst, isConstMacroCall)
} else if (id.type === 'ArrayPattern') {
walkArrayPattern(id, bindings, isConst, isConstMacroCall)
}
}
}
} else if (node.type === 'TSEnumDeclaration') {
isAllLiteral = node.members.every(
member => !member.initializer || isStaticNode(member.initializer),
)
bindings[node.id!.name] = isAllLiteral
? BindingTypes.LITERAL_CONST
: BindingTypes.SETUP_CONST
} else if (
node.type === 'FunctionDeclaration' ||
node.type === 'ClassDeclaration'
) {
// export function foo() {} / export class Foo {}
// export declarations must be named.
bindings[node.id!.name] = BindingTypes.SETUP_CONST
}
return isAllLiteral
}
function walkObjectPattern(
node: ObjectPattern,
bindings: Record<string, BindingTypes>,
isConst: boolean,
isDefineCall = false,
) {
for (const p of node.properties) {
if (p.type === 'ObjectProperty') {
if (p.key.type === 'Identifier' && p.key === p.value) {
// shorthand: const { x } = ...
const type = isDefineCall
? BindingTypes.SETUP_CONST
: isConst
? BindingTypes.SETUP_MAYBE_REF
: BindingTypes.SETUP_LET
registerBinding(bindings, p.key, type)
} else {
walkPattern(p.value, bindings, isConst, isDefineCall)
}
} else {
// ...rest
// argument can only be identifier when destructuring
const type = isConst ? BindingTypes.SETUP_CONST : BindingTypes.SETUP_LET
registerBinding(bindings, p.argument as Identifier, type)
}
}
}
function walkArrayPattern(
node: ArrayPattern,
bindings: Record<string, BindingTypes>,
isConst: boolean,
isDefineCall = false,
) {
for (const e of node.elements) {
e && walkPattern(e, bindings, isConst, isDefineCall)
}
}
function walkPattern(
node: Node,
bindings: Record<string, BindingTypes>,
isConst: boolean,
isDefineCall = false,
) {
if (node.type === 'Identifier') {
const type = isDefineCall
? BindingTypes.SETUP_CONST
: isConst
? BindingTypes.SETUP_MAYBE_REF
: BindingTypes.SETUP_LET
registerBinding(bindings, node, type)
} else if (node.type === 'RestElement') {
// argument can only be identifier when destructuring
const type = isConst ? BindingTypes.SETUP_CONST : BindingTypes.SETUP_LET
registerBinding(bindings, node.argument as Identifier, type)
} else if (node.type === 'ObjectPattern') {
walkObjectPattern(node, bindings, isConst)
} else if (node.type === 'ArrayPattern') {
walkArrayPattern(node, bindings, isConst)
} else if (node.type === 'AssignmentPattern') {
if (node.left.type === 'Identifier') {
const type = isDefineCall
? BindingTypes.SETUP_CONST
: isConst
? BindingTypes.SETUP_MAYBE_REF
: BindingTypes.SETUP_LET
registerBinding(bindings, node.left, type)
} else {
walkPattern(node.left, bindings, isConst)
}
}
}
function canNeverBeRef(node: Node, userReactiveImport?: string): boolean {
if (isCallOf(node, userReactiveImport)) {
return true
}
switch (node.type) {
case 'UnaryExpression':
case 'BinaryExpression':
case 'ArrayExpression':
case 'ObjectExpression':
case 'FunctionExpression':
case 'ArrowFunctionExpression':
case 'UpdateExpression':
case 'ClassExpression':
case 'TaggedTemplateExpression':
return true
case 'SequenceExpression':
return canNeverBeRef(
node.expressions[node.expressions.length - 1],
userReactiveImport,
)
default:
if (isLiteralNode(node)) {
return true
}
return false
}
}
function isStaticNode(node: Node): boolean {
node = unwrapTSNode(node)
switch (node.type) {
case 'UnaryExpression': // void 0, !true
return isStaticNode(node.argument)
case 'LogicalExpression': // 1 > 2
case 'BinaryExpression': // 1 + 2
return isStaticNode(node.left) && isStaticNode(node.right)
case 'ConditionalExpression': {
// 1 ? 2 : 3
return (
isStaticNode(node.test) &&
isStaticNode(node.consequent) &&
isStaticNode(node.alternate)
)
}
case 'SequenceExpression': // (1, 2)
case 'TemplateLiteral': // `foo${1}`
return node.expressions.every(expr => isStaticNode(expr))
case 'ParenthesizedExpression': // (1)
return isStaticNode(node.expression)
case 'StringLiteral':
case 'NumericLiteral':
case 'BooleanLiteral':
case 'NullLiteral':
case 'BigIntLiteral':
return true
}
return false
}
export function mergeSourceMaps(
scriptMap: RawSourceMap,
templateMap: RawSourceMap,
templateLineOffset: number,
): RawSourceMap {
const generator = new SourceMapGenerator()
const addMapping = (map: RawSourceMap, lineOffset = 0) => {
const consumer = new SourceMapConsumer(map)
;(consumer as any).sources.forEach((sourceFile: string) => {
;(generator as any)._sources.add(sourceFile)
const sourceContent = consumer.sourceContentFor(sourceFile)
if (sourceContent != null) {
generator.setSourceContent(sourceFile, sourceContent)
}
})
consumer.eachMapping(m => {
if (m.originalLine == null) return
generator.addMapping({
generated: {
line: m.generatedLine + lineOffset,
column: m.generatedColumn,
},
original: {
line: m.originalLine,
column: m.originalColumn!,
},
source: m.source,
name: m.name,
})
})
}
addMapping(scriptMap)
addMapping(templateMap, templateLineOffset)
;(generator as any)._sourceRoot = scriptMap.sourceRoot
;(generator as any)._file = scriptMap.file
return (generator as any).toJSON()
}
|