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					131 lines
				
				6.2 KiB
			
		
		
			
		
	
	
					131 lines
				
				6.2 KiB
			| 
											3 years ago
										 | "use strict"; | ||
|  | 
 | ||
|  | Object.defineProperty(exports, "__esModule", { | ||
|  |   value: true | ||
|  | }); | ||
|  | exports.FEATURES = void 0; | ||
|  | exports.enableFeature = enableFeature; | ||
|  | exports.isLoose = isLoose; | ||
|  | exports.shouldTransform = shouldTransform; | ||
|  | var _decorators = require("./decorators"); | ||
|  | const FEATURES = Object.freeze({ | ||
|  |   fields: 1 << 1, | ||
|  |   privateMethods: 1 << 2, | ||
|  |   decorators: 1 << 3, | ||
|  |   privateIn: 1 << 4, | ||
|  |   staticBlocks: 1 << 5 | ||
|  | }); | ||
|  | exports.FEATURES = FEATURES; | ||
|  | const featuresSameLoose = new Map([[FEATURES.fields, "@babel/plugin-proposal-class-properties"], [FEATURES.privateMethods, "@babel/plugin-proposal-private-methods"], [FEATURES.privateIn, "@babel/plugin-proposal-private-property-in-object"]]); | ||
|  | 
 | ||
|  | const featuresKey = "@babel/plugin-class-features/featuresKey"; | ||
|  | const looseKey = "@babel/plugin-class-features/looseKey"; | ||
|  | 
 | ||
|  | const looseLowPriorityKey = "@babel/plugin-class-features/looseLowPriorityKey/#__internal__@babel/preset-env__please-overwrite-loose-instead-of-throwing"; | ||
|  | function enableFeature(file, feature, loose) { | ||
|  |   if (!hasFeature(file, feature) || canIgnoreLoose(file, feature)) { | ||
|  |     file.set(featuresKey, file.get(featuresKey) | feature); | ||
|  |     if ( | ||
|  |     loose === "#__internal__@babel/preset-env__prefer-true-but-false-is-ok-if-it-prevents-an-error") { | ||
|  |       setLoose(file, feature, true); | ||
|  |       file.set(looseLowPriorityKey, file.get(looseLowPriorityKey) | feature); | ||
|  |     } else if ( | ||
|  |     loose === "#__internal__@babel/preset-env__prefer-false-but-true-is-ok-if-it-prevents-an-error") { | ||
|  |       setLoose(file, feature, false); | ||
|  |       file.set(looseLowPriorityKey, file.get(looseLowPriorityKey) | feature); | ||
|  |     } else { | ||
|  |       setLoose(file, feature, loose); | ||
|  |     } | ||
|  |   } | ||
|  |   let resolvedLoose; | ||
|  |   let higherPriorityPluginName; | ||
|  |   for (const [mask, name] of featuresSameLoose) { | ||
|  |     if (!hasFeature(file, mask)) continue; | ||
|  |     const loose = isLoose(file, mask); | ||
|  |     if (canIgnoreLoose(file, mask)) { | ||
|  |       continue; | ||
|  |     } else if (resolvedLoose === !loose) { | ||
|  |       throw new Error("'loose' mode configuration must be the same for @babel/plugin-proposal-class-properties, " + "@babel/plugin-proposal-private-methods and " + "@babel/plugin-proposal-private-property-in-object (when they are enabled)."); | ||
|  |     } else { | ||
|  |       resolvedLoose = loose; | ||
|  |       higherPriorityPluginName = name; | ||
|  |     } | ||
|  |   } | ||
|  |   if (resolvedLoose !== undefined) { | ||
|  |     for (const [mask, name] of featuresSameLoose) { | ||
|  |       if (hasFeature(file, mask) && isLoose(file, mask) !== resolvedLoose) { | ||
|  |         setLoose(file, mask, resolvedLoose); | ||
|  |         console.warn(`Though the "loose" option was set to "${!resolvedLoose}" in your @babel/preset-env ` + `config, it will not be used for ${name} since the "loose" mode option was set to ` + `"${resolvedLoose}" for ${higherPriorityPluginName}.\nThe "loose" option must be the ` + `same for @babel/plugin-proposal-class-properties, @babel/plugin-proposal-private-methods ` + `and @babel/plugin-proposal-private-property-in-object (when they are enabled): you can ` + `silence this warning by explicitly adding\n` + `\t["${name}", { "loose": ${resolvedLoose} }]\n` + `to the "plugins" section of your Babel config.`); | ||
|  |       } | ||
|  |     } | ||
|  |   } | ||
|  | } | ||
|  | function hasFeature(file, feature) { | ||
|  |   return !!(file.get(featuresKey) & feature); | ||
|  | } | ||
|  | function isLoose(file, feature) { | ||
|  |   return !!(file.get(looseKey) & feature); | ||
|  | } | ||
|  | function setLoose(file, feature, loose) { | ||
|  |   if (loose) file.set(looseKey, file.get(looseKey) | feature);else file.set(looseKey, file.get(looseKey) & ~feature); | ||
|  |   file.set(looseLowPriorityKey, file.get(looseLowPriorityKey) & ~feature); | ||
|  | } | ||
|  | function canIgnoreLoose(file, feature) { | ||
|  |   return !!(file.get(looseLowPriorityKey) & feature); | ||
|  | } | ||
|  | function shouldTransform(path, file) { | ||
|  |   let decoratorPath = null; | ||
|  |   let publicFieldPath = null; | ||
|  |   let privateFieldPath = null; | ||
|  |   let privateMethodPath = null; | ||
|  |   let staticBlockPath = null; | ||
|  |   if ((0, _decorators.hasOwnDecorators)(path.node)) { | ||
|  |     decoratorPath = path.get("decorators.0"); | ||
|  |   } | ||
|  |   for (const el of path.get("body.body")) { | ||
|  |     if (!decoratorPath && (0, _decorators.hasOwnDecorators)(el.node)) { | ||
|  |       decoratorPath = el.get("decorators.0"); | ||
|  |     } | ||
|  |     if (!publicFieldPath && el.isClassProperty()) { | ||
|  |       publicFieldPath = el; | ||
|  |     } | ||
|  |     if (!privateFieldPath && el.isClassPrivateProperty()) { | ||
|  |       privateFieldPath = el; | ||
|  |     } | ||
|  |     if (!privateMethodPath && el.isClassPrivateMethod != null && el.isClassPrivateMethod()) { | ||
|  |       privateMethodPath = el; | ||
|  |     } | ||
|  |     if (!staticBlockPath && el.isStaticBlock != null && el.isStaticBlock()) { | ||
|  |       staticBlockPath = el; | ||
|  |     } | ||
|  |   } | ||
|  |   if (decoratorPath && privateFieldPath) { | ||
|  |     throw privateFieldPath.buildCodeFrameError("Private fields in decorated classes are not supported yet."); | ||
|  |   } | ||
|  |   if (decoratorPath && privateMethodPath) { | ||
|  |     throw privateMethodPath.buildCodeFrameError("Private methods in decorated classes are not supported yet."); | ||
|  |   } | ||
|  |   if (decoratorPath && !hasFeature(file, FEATURES.decorators)) { | ||
|  |     throw path.buildCodeFrameError("Decorators are not enabled." + "\nIf you are using " + '["@babel/plugin-proposal-decorators", { "version": "legacy" }], ' + 'make sure it comes *before* "@babel/plugin-proposal-class-properties" ' + "and enable loose mode, like so:\n" + '\t["@babel/plugin-proposal-decorators", { "version": "legacy" }]\n' + '\t["@babel/plugin-proposal-class-properties", { "loose": true }]'); | ||
|  |   } | ||
|  |   if (privateMethodPath && !hasFeature(file, FEATURES.privateMethods)) { | ||
|  |     throw privateMethodPath.buildCodeFrameError("Class private methods are not enabled. " + "Please add `@babel/plugin-proposal-private-methods` to your configuration."); | ||
|  |   } | ||
|  |   if ((publicFieldPath || privateFieldPath) && !hasFeature(file, FEATURES.fields) && | ||
|  |   !hasFeature(file, FEATURES.privateMethods)) { | ||
|  |     throw path.buildCodeFrameError("Class fields are not enabled. " + "Please add `@babel/plugin-proposal-class-properties` to your configuration."); | ||
|  |   } | ||
|  |   if (staticBlockPath && !hasFeature(file, FEATURES.staticBlocks)) { | ||
|  |     throw path.buildCodeFrameError("Static class blocks are not enabled. " + "Please add `@babel/plugin-proposal-class-static-block` to your configuration."); | ||
|  |   } | ||
|  |   if (decoratorPath || privateMethodPath || staticBlockPath) { | ||
|  |     return true; | ||
|  |   } | ||
|  |   if ((publicFieldPath || privateFieldPath) && hasFeature(file, FEATURES.fields)) { | ||
|  |     return true; | ||
|  |   } | ||
|  |   return false; | ||
|  | } | ||
|  | 
 | ||
|  | //# sourceMappingURL=features.js.map
 |