@nteract/monaco-editor/lib/editor-base.js

A React component for the monaco editor, tailored for nteract

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.js_idx_to_char_idx = exports.completionRequest = void 0;
const messaging_1 = require("@nteract/messaging");
/**
 * Create Jupyter messaging protocol's complete_request message.
 * @param code Code of editor.
 * @param cursorPos cursor position represented in the Jupyter messaging protocol (character position)
 */
exports.completionRequest = (code, cursorPos) => messaging_1.createMessage("complete_request", {
    content: {
        code,
        cursor_pos: cursorPos
    }
});
/**
 * JavaScript stores text as utf16 and string indices use "code units",
 * which stores high-codepoint characters as "surrogate pairs",
 * which occupy two indices in the JavaScript string.
 * We need to translate cursor_pos in the protocol (in characters)
 * to js offset (with surrogate pairs taking two spots).
 * @param js_idx JavaScript index
 * @param text Text
 */
exports.js_idx_to_char_idx = (js_idx, text) => {
    let char_idx = js_idx;
    for (let i = 0; i + 1 < text.length && i < js_idx; i++) {
        const char_code = text.charCodeAt(i);
        // check for surrogate pair
        if (char_code >= 0xd800 && char_code <= 0xdbff) {
            const next_char_code = text.charCodeAt(i + 1);
            if (next_char_code >= 0xdc00 && next_char_code <= 0xdfff) {
                char_idx--;
                i++;
            }
        }
    }
    return char_idx;
};
//# sourceMappingURL=editor-base.js.map