151 lines
6.1 KiB
JavaScript
151 lines
6.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.FEATURES = void 0;
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exports.enableFeature = enableFeature;
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exports.isLoose = isLoose;
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exports.shouldTransform = shouldTransform;
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var _decorators = require("./decorators");
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const FEATURES = Object.freeze({
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fields: 1 << 1,
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privateMethods: 1 << 2,
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decorators: 1 << 3,
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privateIn: 1 << 4,
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staticBlocks: 1 << 5
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});
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exports.FEATURES = FEATURES;
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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"]]);
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const featuresKey = "@babel/plugin-class-features/featuresKey";
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const looseKey = "@babel/plugin-class-features/looseKey";
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const looseLowPriorityKey = "@babel/plugin-class-features/looseLowPriorityKey/#__internal__@babel/preset-env__please-overwrite-loose-instead-of-throwing";
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function enableFeature(file, feature, loose) {
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if (!hasFeature(file, feature) || canIgnoreLoose(file, feature)) {
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file.set(featuresKey, file.get(featuresKey) | feature);
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if (loose === "#__internal__@babel/preset-env__prefer-true-but-false-is-ok-if-it-prevents-an-error") {
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setLoose(file, feature, true);
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file.set(looseLowPriorityKey, file.get(looseLowPriorityKey) | feature);
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} else if (loose === "#__internal__@babel/preset-env__prefer-false-but-true-is-ok-if-it-prevents-an-error") {
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setLoose(file, feature, false);
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file.set(looseLowPriorityKey, file.get(looseLowPriorityKey) | feature);
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} else {
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setLoose(file, feature, loose);
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}
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}
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let resolvedLoose;
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let higherPriorityPluginName;
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for (const [mask, name] of featuresSameLoose) {
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if (!hasFeature(file, mask)) continue;
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const loose = isLoose(file, mask);
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if (canIgnoreLoose(file, mask)) {
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continue;
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} else if (resolvedLoose === !loose) {
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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).");
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} else {
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resolvedLoose = loose;
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higherPriorityPluginName = name;
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}
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}
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if (resolvedLoose !== undefined) {
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for (const [mask, name] of featuresSameLoose) {
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if (hasFeature(file, mask) && isLoose(file, mask) !== resolvedLoose) {
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setLoose(file, mask, resolvedLoose);
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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.`);
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}
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}
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}
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}
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function hasFeature(file, feature) {
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return !!(file.get(featuresKey) & feature);
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}
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function isLoose(file, feature) {
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return !!(file.get(looseKey) & feature);
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}
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function setLoose(file, feature, loose) {
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if (loose) file.set(looseKey, file.get(looseKey) | feature);else file.set(looseKey, file.get(looseKey) & ~feature);
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file.set(looseLowPriorityKey, file.get(looseLowPriorityKey) & ~feature);
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}
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function canIgnoreLoose(file, feature) {
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return !!(file.get(looseLowPriorityKey) & feature);
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}
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function shouldTransform(path, file) {
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let decoratorPath = null;
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let publicFieldPath = null;
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let privateFieldPath = null;
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let privateMethodPath = null;
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let staticBlockPath = null;
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if ((0, _decorators.hasOwnDecorators)(path.node)) {
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decoratorPath = path.get("decorators.0");
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}
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for (const el of path.get("body.body")) {
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if (!decoratorPath && (0, _decorators.hasOwnDecorators)(el.node)) {
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decoratorPath = el.get("decorators.0");
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}
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if (!publicFieldPath && el.isClassProperty()) {
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publicFieldPath = el;
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}
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if (!privateFieldPath && el.isClassPrivateProperty()) {
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privateFieldPath = el;
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}
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if (!privateMethodPath && el.isClassPrivateMethod != null && el.isClassPrivateMethod()) {
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privateMethodPath = el;
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}
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if (!staticBlockPath && el.isStaticBlock != null && el.isStaticBlock()) {
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staticBlockPath = el;
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}
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}
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if (decoratorPath && privateFieldPath) {
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throw privateFieldPath.buildCodeFrameError("Private fields in decorated classes are not supported yet.");
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}
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if (decoratorPath && privateMethodPath) {
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throw privateMethodPath.buildCodeFrameError("Private methods in decorated classes are not supported yet.");
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}
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if (decoratorPath && !hasFeature(file, FEATURES.decorators)) {
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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 }]');
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}
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if (privateMethodPath && !hasFeature(file, FEATURES.privateMethods)) {
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throw privateMethodPath.buildCodeFrameError("Class private methods are not enabled. " + "Please add `@babel/plugin-proposal-private-methods` to your configuration.");
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}
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if ((publicFieldPath || privateFieldPath) && !hasFeature(file, FEATURES.fields) && !hasFeature(file, FEATURES.privateMethods)) {
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throw path.buildCodeFrameError("Class fields are not enabled. " + "Please add `@babel/plugin-proposal-class-properties` to your configuration.");
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}
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if (staticBlockPath && !hasFeature(file, FEATURES.staticBlocks)) {
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throw path.buildCodeFrameError("Static class blocks are not enabled. " + "Please add `@babel/plugin-proposal-class-static-block` to your configuration.");
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}
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if (decoratorPath || privateMethodPath || staticBlockPath) {
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return true;
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}
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if ((publicFieldPath || privateFieldPath) && hasFeature(file, FEATURES.fields)) {
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return true;
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}
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return false;
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} |