index.js
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.declare = declare;
exports.declarePreset = void 0;
const apiPolyfills = {
assertVersion: api => range => {
throwVersionError(range, api.version);
},
targets: () => () => {
return {};
},
assumption: () => () => {
return undefined;
}
};
function declare(builder) {
return (api, options, dirname) => {
var _clonedApi2;
let clonedApi;
for (const name of Object.keys(apiPolyfills)) {
var _clonedApi;
if (api[name]) continue;
clonedApi = (_clonedApi = clonedApi) != null ? _clonedApi : copyApiObject(api);
clonedApi[name] = apiPolyfills[name](clonedApi);
}
return builder((_clonedApi2 = clonedApi) != null ? _clonedApi2 : api, options || {}, dirname);
};
}
const declarePreset = declare;
exports.declarePreset = declarePreset;
function copyApiObject(api) {
let proto = null;
if (typeof api.version === "string" && /^7\./.test(api.version)) {
proto = Object.getPrototypeOf(api);
if (proto && (!has(proto, "version") || !has(proto, "transform") || !has(proto, "template") || !has(proto, "types"))) {
proto = null;
}
}
return Object.assign({}, proto, api);
}
function has(obj, key) {
return Object.prototype.hasOwnProperty.call(obj, key);
}
function throwVersionError(range, version) {
if (typeof range === "number") {
if (!Number.isInteger(range)) {
throw new Error("Expected string or integer value.");
}
range = `^${range}.0.0-0`;
}
if (typeof range !== "string") {
throw new Error("Expected string or integer value.");
}
const limit = Error.stackTraceLimit;
if (typeof limit === "number" && limit < 25) {
Error.stackTraceLimit = 25;
}
let err;
if (version.slice(0, 2) === "7.") {
err = new Error(`Requires Babel "^7.0.0-beta.41", but was loaded with "${version}". ` + `You'll need to update your @babel/core version.`);
} else {
err = new Error(`Requires Babel "${range}", but was loaded with "${version}". ` + `If you are sure you have a compatible version of @babel/core, ` + `it is likely that something in your build process is loading the ` + `wrong version. Inspect the stack trace of this error to look for ` + `the first entry that doesn't mention "@babel/core" or "babel-core" ` + `to see what is calling Babel.`);
}
if (typeof limit === "number") {
Error.stackTraceLimit = limit;
}
throw Object.assign(err, {
code: "BABEL_VERSION_UNSUPPORTED",
version,
range
});
}
//# sourceMappingURL=index.js.map