/* @flow */
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const compile = require('lodash.template')
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const compileOptions = {
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escape: /{{([^{][\s\S]+?[^}])}}/g,
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interpolate: /{{{([\s\S]+?)}}}/g
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}
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export type ParsedTemplate = {
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head: (data: any) => string;
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neck: (data: any) => string;
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tail: (data: any) => string;
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};
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export function parseTemplate (
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template: string,
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contentPlaceholder?: string = '<!--vue-ssr-outlet-->'
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): ParsedTemplate {
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if (typeof template === 'object') {
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return template
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}
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let i = template.indexOf('</head>')
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const j = template.indexOf(contentPlaceholder)
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if (j < 0) {
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throw new Error(`Content placeholder not found in template.`)
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}
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if (i < 0) {
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i = template.indexOf('<body>')
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if (i < 0) {
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i = j
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}
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}
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return {
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head: compile(template.slice(0, i), compileOptions),
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neck: compile(template.slice(i, j), compileOptions),
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tail: compile(template.slice(j + contentPlaceholder.length), compileOptions)
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}
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}
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