jest-snapshot-parser/lib/v1/parse.js

parse jest snapshot content (*.snap file)

"use strict";
exports.__esModule = true;
var tslib_1 = require("tslib");
exports.parse_v1 = function (content) {
    var data = get_data(content);
    return Object.keys(data).reduce(function (parsed, key) {
        return (tslib_1.__assign({}, parsed, (_a = {}, _a[key] = parse(data[key]), _a)));
        var _a;
    }, {});
};
function parse(value) {
    var reverted_value = revert_extra_line_breaks(value).replace(/\n/g, '\\n');
    try {
        return reverted_value === 'undefined'
            ? undefined
            : JSON.parse(reverted_value);
    }
    catch (error) {
        // istanbul ignore next
        throw new Error("Unexpected error while parsing:\n\n>>> start >>>\n" + reverted_value + "\n<<< end <<<\n\n" + error.message);
    }
}
// https://github.com/facebook/jest/blob/v20.0.4/packages/jest-snapshot/src/utils.js#L128
function revert_extra_line_breaks(str) {
    return str.includes('\n') ? str.slice(1, -1) : str;
}
// https://github.com/facebook/jest/blob/v20.0.4/packages/jest-snapshot/src/utils.js#L98
function get_data(content) {
    var data = Object.create(null);
    var populate = new Function('exports', content);
    populate(data);
    return data;
}