@vue/babel-plugin-jsx
Version:
Babel plugin for Vue 3 JSX
651 lines (650 loc) • 27.7 kB
JavaScript
import { addDefault, addNamed, addNamespace, isModule } from "@babel/helper-module-imports";
import { declare } from "@babel/helper-plugin-utils";
import syntaxJsx from "@babel/plugin-syntax-jsx";
import template from "@babel/template";
import * as t from "@babel/types";
import ResolveType from "@vue/babel-plugin-resolve-type";
import { isHTMLTag, isSVGTag } from "@vue/shared";
//#region src/slotFlags.ts
const SlotFlags = {
/**
* Stable slots that only reference slot props or context state. The slot
* can fully capture its own dependencies so when passed down the parent won't
* need to force the child to update.
*/
STABLE: 1,
/**
* Slots that reference scope variables (v-for or an outer slot prop), or
* has conditional structure (v-if, v-for). The parent will need to force
* the child to update because the slot does not fully capture its dependencies.
*/
DYNAMIC: 2,
/**
* `<slot/>` being forwarded into a child component. Whether the parent needs
* to update the child is dependent on what kind of slots the parent itself
* received. This has to be refined at runtime, when the child's vnode
* is being created (in `normalizeChildren`)
*/
FORWARDED: 3
};
//#endregion
//#region src/utils.ts
const FRAGMENT = "Fragment";
function createIdentifier(state, name) {
return state.get(name)();
}
/**
* Checks if string is describing a directive
* @param src string
*/
function isDirective(src) {
return src.startsWith("v-") || src.startsWith("v") && src.length >= 2 && src[1] >= "A" && src[1] <= "Z";
}
/**
* Should transformed to slots
* @param tag string
* @returns boolean
*/
function shouldTransformedToSlots(tag) {
return !new RegExp(String.raw`^_?${"Fragment"}\d*$`).test(tag) && tag !== "KeepAlive";
}
/**
* Check if a Node is a component
*/
function checkIsComponent(path, state) {
const namePath = path.get("name");
if (namePath.isJSXMemberExpression()) return shouldTransformedToSlots(namePath.node.property.name);
const tag = namePath.node.name;
return !state.opts.isCustomElement?.(tag) && shouldTransformedToSlots(tag) && !isHTMLTag(tag) && !isSVGTag(tag);
}
/**
* Transform JSXMemberExpression to MemberExpression
* @param path JSXMemberExpression
* @returns MemberExpression
*/
function transformJSXMemberExpression(path) {
const objectPath = path.node.object;
const propertyPath = path.node.property;
const transformedObject = t.isJSXMemberExpression(objectPath) ? transformJSXMemberExpression(path.get("object")) : t.isJSXIdentifier(objectPath) ? t.identifier(objectPath.name) : t.nullLiteral();
const transformedProperty = t.identifier(propertyPath.name);
return t.memberExpression(transformedObject, transformedProperty);
}
/**
* Get tag (first attribute for h) from JSXOpeningElement
* @param path JSXElement
* @param state State
* @returns Identifier | StringLiteral | MemberExpression | CallExpression
*/
function getTag(path, state) {
const namePath = path.get("openingElement").get("name");
if (namePath.isJSXIdentifier()) {
const { name } = namePath.node;
if (!isHTMLTag(name) && !isSVGTag(name)) return name === "Fragment" ? createIdentifier(state, FRAGMENT) : path.scope.hasBinding(name) ? t.identifier(name) : state.opts.isCustomElement?.(name) ? t.stringLiteral(name) : t.callExpression(createIdentifier(state, "resolveComponent"), [t.stringLiteral(name)]);
return t.stringLiteral(name);
}
if (namePath.isJSXMemberExpression()) return transformJSXMemberExpression(namePath);
throw new Error(`getTag: ${namePath.type} is not supported`);
}
function getJSXAttributeName(path) {
const nameNode = path.node.name;
if (t.isJSXIdentifier(nameNode)) return nameNode.name;
return `${nameNode.namespace.name}:${nameNode.name.name}`;
}
/**
* Transform JSXText to StringLiteral
* @param path JSXText
* @returns StringLiteral | null
*/
function transformJSXText(path) {
const str = transformText(path.node.value);
return str === "" ? null : t.stringLiteral(str);
}
function transformText(text) {
const lines = text.split(/\r\n|\n|\r/);
let lastNonEmptyLine = 0;
for (const [i, line] of lines.entries()) if (/[^ \t]/.test(line)) lastNonEmptyLine = i;
let str = "";
for (let i = 0; i < lines.length; i++) {
const line = lines[i];
const isFirstLine = i === 0;
const isLastLine = i === lines.length - 1;
const isLastNonEmptyLine = i === lastNonEmptyLine;
let trimmedLine = line.replaceAll(" ", " ");
if (!isFirstLine) trimmedLine = trimmedLine.replace(/^ +/, "");
if (!isLastLine) trimmedLine = trimmedLine.replace(/ +$/, "");
if (trimmedLine) {
if (!isLastNonEmptyLine) trimmedLine += " ";
str += trimmedLine;
}
}
return str;
}
/**
* Transform JSXExpressionContainer to Expression
* @param path JSXExpressionContainer
* @returns Expression
*/
function transformJSXExpressionContainer(path) {
return path.get("expression").node;
}
/**
* Transform JSXSpreadChild
* @param path JSXSpreadChild
* @returns SpreadElement
*/
function transformJSXSpreadChild(path) {
return t.spreadElement(path.get("expression").node);
}
function walksScope(path, name, slotFlag) {
if (path.scope.hasBinding(name) && path.parentPath) {
if (t.isJSXElement(path.parentPath.node)) path.parentPath.setData("slotFlag", slotFlag);
walksScope(path.parentPath, name, slotFlag);
}
}
function buildIIFE(path, children) {
const { parentPath } = path;
if (parentPath.isAssignmentExpression()) {
const { left } = parentPath.node;
if (t.isIdentifier(left)) return children.map((child) => {
if (t.isIdentifier(child) && child.name === left.name) {
const insertName = path.scope.generateUidIdentifier(child.name);
parentPath.insertBefore(t.variableDeclaration("const", [t.variableDeclarator(insertName, t.callExpression(t.functionExpression(null, [], t.blockStatement([t.returnStatement(child)])), []))]));
return insertName;
}
return child;
});
}
return children;
}
const onRE = /^on[^a-z]/;
const isOn = (key) => onRE.test(key);
function mergeAsArray(existing, incoming) {
if (t.isArrayExpression(existing.value)) existing.value.elements.push(incoming.value);
else existing.value = t.arrayExpression([existing.value, incoming.value]);
}
function dedupeProperties(properties = [], mergeProps) {
if (!mergeProps) return properties;
const knownProps = /* @__PURE__ */ new Map();
const deduped = [];
properties.forEach((prop) => {
if (t.isStringLiteral(prop.key)) {
const { value: name } = prop.key;
const existing = knownProps.get(name);
if (existing) {
if (name === "style" || name === "class" || name.startsWith("on")) mergeAsArray(existing, prop);
} else {
knownProps.set(name, prop);
deduped.push(prop);
}
} else deduped.push(prop);
});
return deduped;
}
/**
* Check if an attribute value is constant
* @param node
* @returns boolean
*/
function isConstant(node) {
if (t.isIdentifier(node)) return node.name === "undefined";
if (t.isArrayExpression(node)) {
const { elements } = node;
return elements.every((element) => element && isConstant(element));
}
if (t.isObjectExpression(node)) return node.properties.every((property) => isConstant(property.value));
if (t.isTemplateLiteral(node) ? !node.expressions.length : t.isLiteral(node)) return true;
return false;
}
function transformJSXSpreadAttribute(nodePath, path, mergeProps, args) {
const argument = path.get("argument");
const properties = t.isObjectExpression(argument.node) ? argument.node.properties : void 0;
if (!properties) {
if (argument.isIdentifier()) walksScope(nodePath, argument.node.name, SlotFlags.DYNAMIC);
args.push(mergeProps ? argument.node : t.spreadElement(argument.node));
} else if (mergeProps) args.push(t.objectExpression(properties));
else args.push(...properties);
}
//#endregion
//#region src/sugar-fragment.ts
function transformFragment(path, Fragment) {
return t.jsxElement(t.jsxOpeningElement(Fragment, []), t.jsxClosingElement(Fragment), path.node.children.slice());
}
const visitor$1 = { JSXFragment: { enter(path, state) {
const fragmentCallee = createIdentifier(state, FRAGMENT);
path.replaceWith(transformFragment(path, t.isIdentifier(fragmentCallee) ? t.jsxIdentifier(fragmentCallee.name) : t.jsxMemberExpression(t.jsxIdentifier(fragmentCallee.object.name), t.jsxIdentifier(fragmentCallee.property.name))));
} } };
//#endregion
//#region src/parseDirectives.ts
/**
* Get JSX element type
*
* @param path Path<JSXOpeningElement>
*/
function getType(path) {
const typePath = path.get("attributes").find((attribute) => {
if (!attribute.isJSXAttribute()) return false;
return attribute.get("name").isJSXIdentifier() && attribute.get("name").node.name === "type";
});
return typePath ? typePath.get("value").node : null;
}
function parseModifiers(value) {
return t.isArrayExpression(value) ? value.elements.map((el) => t.isStringLiteral(el) ? el.value : "").filter(Boolean) : [];
}
function parseDirectives(params) {
const { path, value, state, tag, isComponent } = params;
const args = [];
const vals = [];
const modifiersSet = [];
let directiveName;
let directiveArgument;
let directiveModifiers;
if ("namespace" in path.node.name) {
directiveName = path.node.name.namespace.name;
directiveArgument = path.node.name.name.name;
directiveModifiers = directiveArgument.split("_").slice(1);
} else {
const underscoreModifiers = params.name.split("_");
directiveName = underscoreModifiers.shift() || "";
directiveModifiers = underscoreModifiers;
}
directiveName = directiveName.replace(/^v/, "").replace(/^-/, "").replace(/^\S/, (s) => s.toLowerCase());
if (directiveArgument) args.push(t.stringLiteral(directiveArgument.split("_", 1)[0]));
const isVModels = directiveName === "models";
const isVModel = directiveName === "model";
if (isVModel && !path.get("value").isJSXExpressionContainer()) throw new Error("You have to use JSX Expression inside your v-model");
if (isVModels && !isComponent) throw new Error("v-models can only use in custom components");
const shouldResolve = ![
"html",
"text",
"model",
"slots",
"models"
].includes(directiveName) || isVModel && !isComponent;
let modifiers = directiveModifiers;
if (t.isArrayExpression(value)) (isVModels ? value.elements : [value]).forEach((element) => {
if (isVModels && !t.isArrayExpression(element)) throw new Error("You should pass a Two-dimensional Arrays to v-models");
const { elements } = element;
const [first, second, third] = elements;
if (second && !t.isArrayExpression(second) && !t.isSpreadElement(second)) {
args.push(second);
modifiers = parseModifiers(third);
} else if (t.isArrayExpression(second)) {
if (!shouldResolve) args.push(t.nullLiteral());
modifiers = parseModifiers(second);
} else if (!shouldResolve) args.push(t.nullLiteral());
modifiersSet.push(new Set(modifiers));
vals.push(first);
});
else if (isVModel && !shouldResolve) {
args.push(t.nullLiteral());
modifiersSet.push(new Set(directiveModifiers));
} else modifiersSet.push(new Set(directiveModifiers));
return {
directiveName,
modifiers: modifiersSet,
values: vals.length ? vals : [value],
args,
directive: shouldResolve ? [
resolveDirective(path, state, tag, directiveName),
vals[0] || value,
modifiersSet[0]?.size ? args[0] || t.unaryExpression("void", t.numericLiteral(0), true) : args[0],
!!modifiersSet[0]?.size && t.objectExpression([...modifiersSet[0]].map((modifier) => t.objectProperty(t.identifier(modifier), t.booleanLiteral(true))))
].filter(Boolean) : void 0
};
}
function resolveDirective(path, state, tag, directiveName) {
if (directiveName === "show") return createIdentifier(state, "vShow");
if (directiveName === "model") {
let modelToUse;
const type = getType(path.parentPath);
switch (tag.value) {
case "select":
modelToUse = createIdentifier(state, "vModelSelect");
break;
case "textarea":
modelToUse = createIdentifier(state, "vModelText");
break;
default: if (t.isStringLiteral(type) || !type) switch (type?.value) {
case "checkbox":
modelToUse = createIdentifier(state, "vModelCheckbox");
break;
case "radio":
modelToUse = createIdentifier(state, "vModelRadio");
break;
default: modelToUse = createIdentifier(state, "vModelText");
}
else modelToUse = createIdentifier(state, "vModelDynamic");
}
return modelToUse;
}
const referenceName = `v${directiveName[0].toUpperCase()}${directiveName.slice(1)}`;
if (path.scope.getProgramParent().referencesSet.has(referenceName)) return t.identifier(referenceName);
return t.callExpression(createIdentifier(state, "resolveDirective"), [t.stringLiteral(directiveName)]);
}
//#endregion
//#region src/patchFlags.ts
const PatchFlags = {
TEXT: 1,
CLASS: 2,
STYLE: 4,
PROPS: 8,
FULL_PROPS: 16,
HYDRATE_EVENTS: 32,
STABLE_FRAGMENT: 64,
KEYED_FRAGMENT: 128,
UNKEYED_FRAGMENT: 256,
NEED_PATCH: 512,
DYNAMIC_SLOTS: 1024,
HOISTED: -1,
BAIL: -2
};
PatchFlags.TEXT, PatchFlags.CLASS, PatchFlags.STYLE, PatchFlags.PROPS, PatchFlags.FULL_PROPS, PatchFlags.HYDRATE_EVENTS, PatchFlags.STABLE_FRAGMENT, PatchFlags.KEYED_FRAGMENT, PatchFlags.UNKEYED_FRAGMENT, PatchFlags.DYNAMIC_SLOTS, PatchFlags.NEED_PATCH, PatchFlags.HOISTED, PatchFlags.BAIL;
//#endregion
//#region src/transform-vue-jsx.ts
const xlinkRE = /^xlink([A-Z])/;
function getJSXAttributeValue(path, state) {
const valuePath = path.get("value");
if (valuePath.isJSXElement()) return transformJSXElement(valuePath, state);
if (valuePath.isStringLiteral()) return t.stringLiteral(transformText(valuePath.node.value));
if (valuePath.isJSXExpressionContainer()) return transformJSXExpressionContainer(valuePath);
return null;
}
function buildProps(path, state) {
const tag = getTag(path, state);
const isComponent = checkIsComponent(path.get("openingElement"), state);
const props = path.get("openingElement").get("attributes");
const directives = [];
const dynamicPropNames = /* @__PURE__ */ new Set();
let slots = null;
let patchFlag = 0;
if (props.length === 0) return {
tag,
isComponent,
slots,
props: t.nullLiteral(),
directives,
patchFlag,
dynamicPropNames
};
let properties = [];
let hasRef = false;
let hasClassBinding = false;
let hasStyleBinding = false;
let hasHydrationEventBinding = false;
let hasDynamicKeys = false;
const mergeArgs = [];
const { mergeProps = true } = state.opts;
props.forEach((prop) => {
if (prop.isJSXAttribute()) {
let name = getJSXAttributeName(prop);
const attributeValue = getJSXAttributeValue(prop, state);
if (!isConstant(attributeValue) || name === "ref") {
if (!isComponent && isOn(name) && name.toLowerCase() !== "onclick" && name !== "onUpdate:modelValue") hasHydrationEventBinding = true;
if (name === "ref") hasRef = true;
else if (name === "class" && !isComponent) hasClassBinding = true;
else if (name === "style" && !isComponent) hasStyleBinding = true;
else if (name !== "key" && !isDirective(name) && name !== "on") dynamicPropNames.add(name);
}
if (state.opts.transformOn && (name === "on" || name === "nativeOn")) {
if (!state.get("transformOn")) state.set("transformOn", addDefault(path, "@vue/babel-helper-vue-transform-on", { nameHint: "_transformOn" }));
mergeArgs.push(t.callExpression(state.get("transformOn"), [attributeValue || t.booleanLiteral(true)]));
return;
}
if (isDirective(name)) {
const { directive, modifiers, values, args, directiveName } = parseDirectives({
tag,
isComponent,
name,
path: prop,
state,
value: attributeValue
});
if (directiveName === "slots") {
slots = attributeValue;
return;
}
if (directive) directives.push(t.arrayExpression(directive));
else if (directiveName === "html") {
properties.push(t.objectProperty(t.stringLiteral("innerHTML"), values[0]));
dynamicPropNames.add("innerHTML");
} else if (directiveName === "text") {
properties.push(t.objectProperty(t.stringLiteral("textContent"), values[0]));
dynamicPropNames.add("textContent");
}
if (["models", "model"].includes(directiveName)) values.forEach((value, index) => {
const propName = args[index];
const isDynamic = propName && !t.isStringLiteral(propName) && !t.isNullLiteral(propName);
if (!directive) {
properties.push(t.objectProperty(t.isNullLiteral(propName) ? t.stringLiteral("modelValue") : propName, value, isDynamic));
if (!isDynamic) dynamicPropNames.add(propName?.value || "modelValue");
if (modifiers[index]?.size) properties.push(t.objectProperty(isDynamic ? t.binaryExpression("+", propName, t.stringLiteral("Modifiers")) : t.stringLiteral(`${propName?.value || "model"}Modifiers`), t.objectExpression([...modifiers[index]].map((modifier) => t.objectProperty(t.stringLiteral(modifier), t.booleanLiteral(true)))), isDynamic));
}
const updateName = isDynamic ? t.binaryExpression("+", t.stringLiteral("onUpdate:"), propName) : t.stringLiteral(`onUpdate:${propName?.value || "modelValue"}`);
properties.push(t.objectProperty(updateName, t.arrowFunctionExpression([t.identifier("$event")], t.assignmentExpression("=", value, t.identifier("$event"))), isDynamic));
if (isDynamic) hasDynamicKeys = true;
else dynamicPropNames.add(updateName.value);
});
} else {
if (xlinkRE.test(name)) name = name.replace(xlinkRE, (_, firstCharacter) => `xlink:${firstCharacter.toLowerCase()}`);
properties.push(t.objectProperty(t.stringLiteral(name), attributeValue || t.booleanLiteral(true)));
}
} else {
if (properties.length && mergeProps) {
mergeArgs.push(t.objectExpression(dedupeProperties(properties, mergeProps)));
properties = [];
}
hasDynamicKeys = true;
transformJSXSpreadAttribute(path, prop, mergeProps, mergeProps ? mergeArgs : properties);
}
});
if (hasDynamicKeys) patchFlag |= PatchFlags.FULL_PROPS;
else {
if (hasClassBinding) patchFlag |= PatchFlags.CLASS;
if (hasStyleBinding) patchFlag |= PatchFlags.STYLE;
if (dynamicPropNames.size) patchFlag |= PatchFlags.PROPS;
if (hasHydrationEventBinding) patchFlag |= PatchFlags.HYDRATE_EVENTS;
}
if ((patchFlag === 0 || patchFlag === PatchFlags.HYDRATE_EVENTS) && (hasRef || directives.length > 0)) patchFlag |= PatchFlags.NEED_PATCH;
let propsExpression = t.nullLiteral();
if (mergeArgs.length) {
if (properties.length) mergeArgs.push(t.objectExpression(dedupeProperties(properties, mergeProps)));
if (mergeArgs.length > 1) propsExpression = t.callExpression(createIdentifier(state, "mergeProps"), mergeArgs);
else propsExpression = mergeArgs[0];
} else if (properties.length) if (properties.length === 1 && t.isSpreadElement(properties[0])) propsExpression = properties[0].argument;
else propsExpression = t.objectExpression(dedupeProperties(properties, mergeProps));
return {
tag,
props: propsExpression,
isComponent,
slots,
directives,
patchFlag,
dynamicPropNames
};
}
/**
* Get children from Array of JSX children
* @param paths Array<JSXText | JSXExpressionContainer | JSXElement | JSXFragment>
* @returns Array<Expression | SpreadElement>
*/
function getChildren(paths, state) {
return paths.map((path) => {
if (path.isJSXText()) {
const transformedText = transformJSXText(path);
if (transformedText) return t.callExpression(createIdentifier(state, "createTextVNode"), [transformedText]);
return transformedText;
}
if (path.isJSXExpressionContainer()) {
const expression = transformJSXExpressionContainer(path);
if (t.isIdentifier(expression)) {
const { name } = expression;
const { referencePaths = [] } = path.scope.getBinding(name) || {};
referencePaths.forEach((referencePath) => {
walksScope(referencePath, name, SlotFlags.DYNAMIC);
});
}
return expression;
}
if (path.isJSXSpreadChild()) return transformJSXSpreadChild(path);
if (path.isCallExpression()) return path.node;
if (path.isJSXElement()) return transformJSXElement(path, state);
throw new Error(`getChildren: ${path.type} is not supported`);
}).filter(((value) => value != null && !t.isJSXEmptyExpression(value)));
}
function transformJSXElement(path, state) {
const children = getChildren(path.get("children"), state);
const { tag, props, isComponent, directives, patchFlag, dynamicPropNames, slots } = buildProps(path, state);
const { optimize = false } = state.opts;
if (directives.length && directives.some((d) => d.elements?.[0]?.type === "CallExpression" && d.elements[0].callee.type === "Identifier" && d.elements[0].callee.name === "_resolveDirective")) {
let currentPath = path;
while (currentPath.parentPath?.isJSXElement()) {
currentPath = currentPath.parentPath;
currentPath.setData("slotFlag", 0);
}
}
const slotFlag = path.getData("slotFlag") ?? SlotFlags.STABLE;
const optimizeSlots = optimize && slotFlag !== 0;
let VNodeChild;
if (children.length > 1 || slots) VNodeChild = isComponent ? children.length ? t.objectExpression([
!!children.length && t.objectProperty(t.identifier("default"), t.arrowFunctionExpression([], t.arrayExpression(buildIIFE(path, children)))),
...slots ? t.isObjectExpression(slots) ? slots.properties : [t.spreadElement(slots)] : [],
optimizeSlots && t.objectProperty(t.identifier("_"), t.numericLiteral(slotFlag))
].filter(Boolean)) : slots : t.arrayExpression(children);
else if (children.length === 1) {
const { enableObjectSlots = true } = state.opts;
const child = children[0];
const objectExpression = t.objectExpression([t.objectProperty(t.identifier("default"), t.arrowFunctionExpression([], t.arrayExpression(buildIIFE(path, [child])))), optimizeSlots && t.objectProperty(t.identifier("_"), t.numericLiteral(slotFlag))].filter(Boolean));
if (t.isIdentifier(child) && isComponent) VNodeChild = enableObjectSlots ? t.conditionalExpression(t.callExpression(state.get("@vue/babel-plugin-jsx/runtimeIsSlot")(), [child]), child, objectExpression) : objectExpression;
else if (t.isCallExpression(child) && child.loc && isComponent) if (enableObjectSlots) {
const { scope } = path;
const slotId = scope.generateUidIdentifier("slot");
if (scope) scope.push({
id: slotId,
kind: "let"
});
const alternate = t.objectExpression([t.objectProperty(t.identifier("default"), t.arrowFunctionExpression([], t.arrayExpression(buildIIFE(path, [slotId])))), optimizeSlots && t.objectProperty(t.identifier("_"), t.numericLiteral(slotFlag))].filter(Boolean));
const assignment = t.assignmentExpression("=", slotId, child);
const condition = t.callExpression(state.get("@vue/babel-plugin-jsx/runtimeIsSlot")(), [assignment]);
VNodeChild = t.conditionalExpression(condition, slotId, alternate);
} else VNodeChild = objectExpression;
else if (t.isFunctionExpression(child) || t.isArrowFunctionExpression(child)) VNodeChild = t.objectExpression([t.objectProperty(t.identifier("default"), child)]);
else if (t.isObjectExpression(child)) VNodeChild = t.objectExpression([...child.properties, optimizeSlots && t.objectProperty(t.identifier("_"), t.numericLiteral(slotFlag))].filter(Boolean));
else VNodeChild = isComponent ? t.objectExpression([t.objectProperty(t.identifier("default"), t.arrowFunctionExpression([], t.arrayExpression([child])))]) : t.arrayExpression([child]);
}
const createVNode = t.callExpression(createIdentifier(state, "createVNode"), [
tag,
props,
VNodeChild || t.nullLiteral(),
!!patchFlag && optimize && t.numericLiteral(patchFlag),
!!dynamicPropNames.size && optimize && t.arrayExpression([...dynamicPropNames.keys()].map((name) => t.stringLiteral(name)))
].filter(Boolean));
if (!directives.length) return createVNode;
return t.callExpression(createIdentifier(state, "withDirectives"), [createVNode, t.arrayExpression(directives)]);
}
const visitor = { JSXElement: { exit(path, state) {
path.replaceWith(transformJSXElement(path, state));
} } };
//#endregion
//#region src/index.ts
function hasJSX(parentPath) {
return t.traverseFast(parentPath.node, (node) => {
if (t.isJSXElement(node) || t.isJSXFragment(node)) return t.traverseFast.stop;
});
}
const JSX_ANNOTATION_REGEX = /\*?\s*@jsx\s+(\S+)/;
const plugin = declare((api, opt, dirname) => {
const { types } = api;
let resolveType;
if (opt.resolveType) {
if (typeof opt.resolveType === "boolean") opt.resolveType = {};
resolveType = ResolveType(api, opt.resolveType, dirname);
}
return {
...resolveType,
name: "babel-plugin-jsx",
inherits: syntaxJsx,
visitor: {
...resolveType?.visitor,
...visitor,
...visitor$1,
Program: { enter(path, state) {
if (hasJSX(path)) {
const importNames = [
"createVNode",
"Fragment",
"resolveComponent",
"withDirectives",
"vShow",
"vModelSelect",
"vModelText",
"vModelCheckbox",
"vModelRadio",
"vModelText",
"vModelDynamic",
"resolveDirective",
"mergeProps",
"createTextVNode",
"isVNode"
];
if (isModule(path)) {
const importMap = {};
importNames.forEach((name) => {
state.set(name, () => {
if (importMap[name]) return types.cloneNode(importMap[name]);
const identifier = addNamed(path, name, "vue", { ensureLiveReference: true });
importMap[name] = identifier;
return identifier;
});
});
const { enableObjectSlots = true } = state.opts;
if (enableObjectSlots) state.set("@vue/babel-plugin-jsx/runtimeIsSlot", () => {
if (importMap.runtimeIsSlot) return importMap.runtimeIsSlot;
const { name: isVNodeName } = state.get("isVNode")();
const isSlot = path.scope.generateUidIdentifier("isSlot");
const ast = template.ast`
function ${isSlot.name}(s) {
return typeof s === 'function' || (Object.prototype.toString.call(s) === '[object Object]' && !${isVNodeName}(s));
}
`;
const lastImport = path.get("body").findLast((p) => p.isImportDeclaration());
if (lastImport) lastImport.insertAfter(ast);
importMap.runtimeIsSlot = isSlot;
return isSlot;
});
} else {
let sourceName;
importNames.forEach((name) => {
state.set(name, () => {
if (!sourceName) sourceName = addNamespace(path, "vue", { ensureLiveReference: true });
return t.memberExpression(sourceName, t.identifier(name));
});
});
const helpers = {};
const { enableObjectSlots = true } = state.opts;
if (enableObjectSlots) state.set("@vue/babel-plugin-jsx/runtimeIsSlot", () => {
if (helpers.runtimeIsSlot) return helpers.runtimeIsSlot;
const isSlot = path.scope.generateUidIdentifier("isSlot");
const { object: objectName } = state.get("isVNode")();
const ast = template.ast`
function ${isSlot.name}(s) {
return typeof s === 'function' || (Object.prototype.toString.call(s) === '[object Object]' && !${objectName.name}.isVNode(s));
}
`;
const lastImport = path.get("body").findLast((p) => p.isVariableDeclaration() && p.node.declarations.some((d) => d.id?.name === sourceName.name));
if (lastImport) lastImport.insertAfter(ast);
return isSlot;
});
}
const { opts: { pragma = "" }, file } = state;
if (pragma) state.set("createVNode", () => t.identifier(pragma));
if (file.ast.comments) for (const comment of file.ast.comments) {
const jsxMatches = JSX_ANNOTATION_REGEX.exec(comment.value);
if (jsxMatches) state.set("createVNode", () => t.identifier(jsxMatches[1]));
}
}
} }
}
};
});
//#endregion
export { plugin as default, plugin as "module.exports" };