1 | import browserify from 'browserify'
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2 | import chalk from 'chalk'
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3 | import fs from 'fs'
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4 | import rollupify from 'rollupify'
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5 | import watchify from 'watchify'
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6 |
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7 | let watchError
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8 | export default function watch(opts) {
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9 | const b = browserify({
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10 | cache: {},
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11 |
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12 | entries: [opts.entry],
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13 | packageCache: {},
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14 | plugin: [watchify]
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15 | })
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16 |
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17 | const domain = chalk.dim(`[${opts.domain}${opts.root}]`)
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18 |
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19 |
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20 | b.require(opts.entry, {expose: opts.expose})
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21 |
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22 |
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23 | b.require(opts.requires)
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24 |
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25 |
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26 | b.transform(rollupify, {config: opts.rollupConfig, sourceMaps: false})
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27 |
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28 |
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29 | opts.externals.forEach(dep => b.external(dep))
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30 |
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31 |
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32 | function bundle() {
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33 | b.bundle().pipe(fs.createWriteStream(opts.tmp))
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34 | }
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35 | bundle()
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36 |
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37 | b.on('update', bundle)
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38 | b.on('log', msg => {
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39 | console.log(domain, msg)
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40 | })
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41 |
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42 | b.on('bundle', theBundle => {
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43 | theBundle.on('error', error => {
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44 | if (watchError !== error.stack) {
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45 | if (error.codeFrame) {
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46 | console.error(domain, chalk.red(`${error.constructor.name} at ${error.id}`))
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47 | console.error(domain, error.codeFrame)
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48 | } else {
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49 | const match = error.stack.match(/Error: Could not resolve (.+?) from (.+?) while/)
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50 | if (match) {
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51 | console.error(domain, chalk.red(`ImportError at ${match[2]}`))
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52 | console.error(domain, 'Does', chalk.blue(match[1]), 'exist? Check that import statement.')
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53 | } else {
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54 | console.error(domain, error.stack)
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55 | }
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56 | }
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57 | watchError = error.stack
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58 | }
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59 | b.removeAllListeners()
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60 | b.close()
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61 | setTimeout(() => watch(opts), 1000)
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62 | })
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63 | })
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64 |
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65 | return function cleanup() {
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66 | try {
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67 | fs.unlinkSync(opts.tmp)
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68 | } catch(err) {
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69 | }
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70 |
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71 | try {
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72 | fs.unlinkSync(`${opts.entry}.tmp`)
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73 | } catch(err) {
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74 | }
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75 | process.exit()
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76 | }
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77 | }
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