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98 lines
3.8 KiB
98 lines
3.8 KiB
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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Modified by Evan You @yyx990803
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*/
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var loaderUtils = require('loader-utils')
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var path = require('path')
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var hash = require('hash-sum')
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var qs = require('querystring')
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module.exports = function () {}
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module.exports.pitch = function (remainingRequest) {
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var isServer = this.target === 'node'
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var isProduction = this.minimize || process.env.NODE_ENV === 'production'
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var addStylesClientPath = loaderUtils.stringifyRequest(this, '!' + path.join(__dirname, 'lib/addStylesClient.js'))
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var addStylesServerPath = loaderUtils.stringifyRequest(this, '!' + path.join(__dirname, 'lib/addStylesServer.js'))
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var addStylesShadowPath = loaderUtils.stringifyRequest(this, '!' + path.join(__dirname, 'lib/addStylesShadow.js'))
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var request = loaderUtils.stringifyRequest(this, '!!' + remainingRequest)
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var relPath = path.relative(__dirname, this.resourcePath).replace(/\\/g, '/')
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var id = JSON.stringify(hash(request + relPath))
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var options = loaderUtils.getOptions(this) || {}
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// direct css import from js --> direct, or manually call `styles.__inject__(ssrContext)` with `manualInject` option
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// css import from vue file --> component lifecycle linked
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// style embedded in vue file --> component lifecycle linked
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var isVue = (
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/"vue":true/.test(remainingRequest) ||
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options.manualInject ||
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qs.parse(this.resourceQuery.slice(1)).vue != null
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)
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var shared = [
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'// style-loader: Adds some css to the DOM by adding a <style> tag',
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'',
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'// load the styles',
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'var content = require(' + request + ');',
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// content list format is [id, css, media, sourceMap]
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"if(typeof content === 'string') content = [[module.id, content, '']];",
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'if(content.locals) module.exports = content.locals;'
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]
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// shadowMode is enabled in vue-cli with vue build --target web-component.
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// exposes the same __inject__ method like SSR
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if (options.shadowMode) {
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return shared.concat([
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'// add CSS to Shadow Root',
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'var add = require(' + addStylesShadowPath + ').default',
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'module.exports.__inject__ = function (shadowRoot) {',
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' add(' + id + ', content, shadowRoot)',
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'};'
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]).join('\n')
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} else if (!isServer) {
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// on the client: dynamic inject + hot-reload
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var code = [
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'// add the styles to the DOM',
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'var add = require(' + addStylesClientPath + ').default',
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'var update = add(' + id + ', content, ' + isProduction + ', ' + JSON.stringify(options) + ');'
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]
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if (!isProduction) {
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code = code.concat([
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'// Hot Module Replacement',
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'if(module.hot) {',
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' // When the styles change, update the <style> tags',
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' if(!content.locals) {',
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' module.hot.accept(' + request + ', function() {',
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' var newContent = require(' + request + ');',
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" if(typeof newContent === 'string') newContent = [[module.id, newContent, '']];",
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' update(newContent);',
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' });',
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' }',
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' // When the module is disposed, remove the <style> tags',
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' module.hot.dispose(function() { update(); });',
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'}'
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])
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}
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return shared.concat(code).join('\n')
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} else {
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// on the server: attach to Vue SSR context
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if (isVue) {
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// inside *.vue file: expose a function so it can be called in
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// component's lifecycle hooks
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return shared.concat([
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'// add CSS to SSR context',
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'var add = require(' + addStylesServerPath + ').default',
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'module.exports.__inject__ = function (context) {',
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' add(' + id + ', content, ' + isProduction + ', context)',
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'};'
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]).join('\n')
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} else {
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// normal import
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return shared.concat([
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'require(' + addStylesServerPath + ').default(' + id + ', content, ' + isProduction + ')'
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]).join('\n')
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}
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}
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}
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