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91 lines
3.0 KiB
91 lines
3.0 KiB
const uniI18n = require('@dcloudio/uni-cli-i18n')
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const hyphenateRE = /\B([A-Z])/g
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function cached (fn) {
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const cache = Object.create(null)
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return function cachedFn (str) {
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const hit = cache[str]
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return hit || (cache[str] = fn(str))
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}
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}
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const hyphenate = cached((str) => {
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return str.replace(hyphenateRE, '-$1').toLowerCase()
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})
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module.exports = function ({
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types: t
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}) {
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return {
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visitor: {
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ExportDefaultDeclaration (path) {
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const declaration = path.node.declaration
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// export default {components:{}}
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if (t.isObjectExpression(declaration)) {
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handleObjectExpression(declaration, path)
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}
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// export default Vue.extend({components:{}})
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if (t.isCallExpression(declaration) && t.isMemberExpression(declaration.callee) && declaration.arguments
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.length === 1) {
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if (declaration.callee.object.name === 'Vue' && declaration.callee.property.name === 'extend') {
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handleObjectExpression(declaration.arguments[0], path)
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}
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}
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// export default @Component({components:{}}) class MyComponent extend Vue
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if (t.isClassDeclaration(declaration) && declaration.decorators && declaration.decorators.length) {
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const componentDecorator = declaration.decorators[0]
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if (t.isCallExpression(componentDecorator.expression)) {
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const args = componentDecorator.expression.arguments
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if (args && args.length && t.isObjectExpression(args[0])) {
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handleObjectExpression(args[0], path)
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}
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}
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}
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}
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}
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}
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function handleObjectExpression (declaration, path) {
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const componentsProperty = declaration.properties.filter(prop => {
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return t.isObjectProperty(prop) && t.isIdentifier(prop.key) &&
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prop.key.name === 'components'
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})[0]
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if (componentsProperty && t.isObjectExpression(componentsProperty.value)) {
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const properties = componentsProperty.value.properties
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.filter(prop => t.isObjectProperty(prop) && t.isIdentifier(prop.value))
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const components = {}
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properties.forEach(prop => {
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// prop.key maybe Identifier or StringLiteral
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// Identifier use name, StringLiteral use value
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const key = prop.key.name || prop.key.value
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const value = prop.value.name
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const source = findSource(value, path.scope.bindings)
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if (!source) {
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throw new Error(uniI18n.__('mpLoader.componentReferenceError', { 0: key }))
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}
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if (process.UNI_LIBRARIES.includes(source)) {
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const componentName = hyphenate(key)
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components[key] = source + '/lib/' + componentName + '/' + componentName
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} else {
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components[key] = source
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}
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})
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path.hub.file.metadata.components = components
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}
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}
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function findSource (identifierName, bindings) {
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const binding = bindings[identifierName]
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if (!binding) {
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return
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}
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if (t.isImportDeclaration(binding.path.parent)) {
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return binding.path.parent.source.value
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}
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}
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}
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