Mercurial > hg > nginx-site
annotate xml/en/docs/njs/typescript.xml @ 2922:547303412ab9
Fixed article in "if_modified_since before".
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Wed, 04 Jan 2023 01:08:35 +0300 |
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1 <?xml version="1.0"?> |
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2 |
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3 <!-- |
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4 Copyright (C) Nginx, Inc. |
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5 --> |
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6 |
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7 <!DOCTYPE article SYSTEM "../../../../dtd/article.dtd"> |
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8 |
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9 <article name="Writing njs code using TypeScript definition files" |
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10 link="/en/docs/njs/typescript.html" |
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11 lang="en" |
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12 rev="1"> |
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13 |
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14 <section> |
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15 |
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16 <para> |
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17 <link url="https://www.typescriptlang.org">TypeScript</link> is |
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18 a typed superset of JavaScript |
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19 that compiles to plain JavaScript. |
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20 </para> |
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21 |
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22 <para> |
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23 TypeScript supports definition files that contain |
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24 type information of existing JavaScript libraries. |
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25 This enables other programs to use the values defined in the files |
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26 as if they were statically typed TypeScript entities. |
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27 </para> |
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28 |
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29 <para> |
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30 njs provides TypeScript definition files for its |
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31 <link doc="reference.xml">API</link> which can be used to: |
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32 <list type="bullet"> |
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33 |
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34 <listitem> |
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35 Get autocompletion and API check in an editor |
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36 </listitem> |
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37 |
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38 <listitem> |
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39 Write njs type-safe code |
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40 </listitem> |
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41 |
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42 </list> |
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43 </para> |
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44 |
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45 </section> |
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46 |
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47 |
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48 <section id="get" name="Compiling TypeScript definition files"> |
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49 |
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50 <para> |
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51 <example> |
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52 $ hg clone http://hg.nginx.org/njs |
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53 $ cd njs && ./configure && make ts |
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54 $ ls build/ts/ |
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55 njs_core.d.ts |
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56 njs_shell.d.ts |
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57 ngx_http_js_module.d.ts |
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58 ngx_stream_js_module.d.ts |
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59 </example> |
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60 </para> |
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61 |
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62 </section> |
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63 |
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64 |
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65 <section id="autocomplete" name="API checks and autocompletions"> |
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66 |
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67 <para> |
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68 Put <literal>*.d.ts</literal> files to a place where you editor can find it. |
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69 </para> |
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70 |
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71 <para> |
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72 <literal>test.js</literal>: |
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73 <example> |
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74 /// <reference path="ngx_http_js_module.d.ts" /> |
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75 /** |
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76 * @param {NginxHTTPRequest} r |
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77 * */ |
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78 function content_handler(r) { |
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79 r.headersOut['content-type'] = 'text/plain'; |
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80 r.return(200, "Hello"); |
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81 } |
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82 </example> |
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83 </para> |
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84 |
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85 </section> |
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86 |
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87 |
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88 <section id="write" name="Writing njs type-safe code"> |
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89 |
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90 <para> |
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91 <literal>test.ts</literal>: |
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92 <example> |
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93 /// <reference path="ngx_http_js_module.d.ts" /> |
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94 function content_handler(r: NginxHTTPRequest) { |
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95 r.headersOut['content-type'] = 'text/plain'; |
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96 r.return(200, "Hello from TypeScript"); |
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97 } |
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98 </example> |
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99 TypeScript installation: |
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100 <example> |
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101 # npm install -g typescript |
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102 </example> |
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103 TypeScript compilation: |
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104 <example> |
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105 $ tsc test.ts |
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106 $ cat test.js |
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107 </example> |
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108 The resulting <literal>test.js</literal> file can be used directly with njs. |
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109 </para> |
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110 |
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111 </section> |
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112 |
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113 |
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114 </article> |