compileTemplate.js 5.2 KB

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  1. "use strict";
  2. var __importDefault = (this && this.__importDefault) || function (mod) {
  3. return (mod && mod.__esModule) ? mod : { "default": mod };
  4. };
  5. Object.defineProperty(exports, "__esModule", { value: true });
  6. const assetUrl_1 = __importDefault(require("./templateCompilerModules/assetUrl"));
  7. const srcset_1 = __importDefault(require("./templateCompilerModules/srcset"));
  8. const consolidate = require('consolidate');
  9. const transpile = require('vue-template-es2015-compiler');
  10. function compileTemplate(options) {
  11. const { preprocessLang } = options;
  12. const preprocessor = preprocessLang && consolidate[preprocessLang];
  13. if (preprocessor) {
  14. return actuallyCompile(Object.assign({}, options, {
  15. source: preprocess(options, preprocessor)
  16. }));
  17. }
  18. else if (preprocessLang) {
  19. return {
  20. ast: {},
  21. code: `var render = function () {}\n` + `var staticRenderFns = []\n`,
  22. source: options.source,
  23. tips: [
  24. `Component ${options.filename} uses lang ${preprocessLang} for template. Please install the language preprocessor.`
  25. ],
  26. errors: [
  27. `Component ${options.filename} uses lang ${preprocessLang} for template, however it is not installed.`
  28. ]
  29. };
  30. }
  31. else {
  32. return actuallyCompile(options);
  33. }
  34. }
  35. exports.compileTemplate = compileTemplate;
  36. function preprocess(options, preprocessor) {
  37. const { source, filename, preprocessOptions } = options;
  38. const finalPreprocessOptions = Object.assign({
  39. filename
  40. }, preprocessOptions);
  41. // Consolidate exposes a callback based API, but the callback is in fact
  42. // called synchronously for most templating engines. In our case, we have to
  43. // expose a synchronous API so that it is usable in Jest transforms (which
  44. // have to be sync because they are applied via Node.js require hooks)
  45. let res, err;
  46. preprocessor.render(source, finalPreprocessOptions, (_err, _res) => {
  47. if (_err)
  48. err = _err;
  49. res = _res;
  50. });
  51. if (err)
  52. throw err;
  53. return res;
  54. }
  55. function actuallyCompile(options) {
  56. const { source, compiler, compilerOptions = {}, transpileOptions = {}, transformAssetUrls, isProduction = process.env.NODE_ENV === 'production', isFunctional = false, optimizeSSR = false, prettify = true } = options;
  57. const compile = optimizeSSR && compiler.ssrCompile ? compiler.ssrCompile : compiler.compile;
  58. let finalCompilerOptions = compilerOptions;
  59. if (transformAssetUrls) {
  60. const builtInModules = [
  61. transformAssetUrls === true
  62. ? assetUrl_1.default()
  63. : assetUrl_1.default(transformAssetUrls),
  64. srcset_1.default()
  65. ];
  66. finalCompilerOptions = Object.assign({}, compilerOptions, {
  67. modules: [...builtInModules, ...(compilerOptions.modules || [])],
  68. filename: options.filename
  69. });
  70. }
  71. const { ast, render, staticRenderFns, tips, errors } = compile(source, finalCompilerOptions);
  72. if (errors && errors.length) {
  73. return {
  74. ast,
  75. code: `var render = function () {}\n` + `var staticRenderFns = []\n`,
  76. source,
  77. tips,
  78. errors
  79. };
  80. }
  81. else {
  82. const finalTranspileOptions = Object.assign({}, transpileOptions, {
  83. transforms: Object.assign({}, transpileOptions.transforms, {
  84. stripWithFunctional: isFunctional
  85. })
  86. });
  87. const toFunction = (code) => {
  88. return `function (${isFunctional ? `_h,_vm` : ``}) {${code}}`;
  89. };
  90. // transpile code with vue-template-es2015-compiler, which is a forked
  91. // version of Buble that applies ES2015 transforms + stripping `with` usage
  92. let code = transpile(`var __render__ = ${toFunction(render)}\n` +
  93. `var __staticRenderFns__ = [${staticRenderFns.map(toFunction)}]`, finalTranspileOptions) + `\n`;
  94. // #23 we use __render__ to avoid `render` not being prefixed by the
  95. // transpiler when stripping with, but revert it back to `render` to
  96. // maintain backwards compat
  97. code = code.replace(/\s__(render|staticRenderFns)__\s/g, ' $1 ');
  98. if (!isProduction) {
  99. // mark with stripped (this enables Vue to use correct runtime proxy
  100. // detection)
  101. code += `render._withStripped = true`;
  102. if (prettify) {
  103. try {
  104. code = require('prettier').format(code, {
  105. semi: false,
  106. parser: 'babel'
  107. });
  108. }
  109. catch (e) {
  110. if (e.code === 'MODULE_NOT_FOUND') {
  111. tips.push('The `prettify` option is on, but the dependency `prettier` is not found.\n' +
  112. 'Please either turn off `prettify` or manually install `prettier`.');
  113. }
  114. tips.push(`Failed to prettify component ${options.filename} template source after compilation.`);
  115. }
  116. }
  117. }
  118. return {
  119. ast,
  120. code,
  121. source,
  122. tips,
  123. errors
  124. };
  125. }
  126. }