PR into master from dev/olga/Fixed-spaces-for-operatorname-in-asciimath

lib/mathjax/serialized-ascii/common.d.ts

@@ -4,4 +4,13 @@ export interface IAsciiData {
     ascii_csv: string;
     ascii_md: string;
 }
-export declare const AddToAsciiData: (data: IAsciiData, arr: Array<string>) => IAsciiData;
+export declare const regLetter: RegExp;
+export declare const regW: RegExp;
+export declare const AddToAsciiData: (data: IAsciiData, arr: Array<string>, serialize: any, node?: any) => IAsciiData;
+export declare const pushToSerializedStack: (serialize: any, data: any, node?: any) => void;
+export declare const clearSerializedChildStack: (serialize: any) => void;
+export declare const getLastSymbolFromSerializedStack: (serialize: any) => string;
+export declare const getLastItemFromSerializedStack: (serialize: any) => any;
+export declare const needFirstSpaceBeforeLetter: (node: any, currentText: any, serialize: any) => boolean;
+export declare const needSpaceBetweenLetters: (strBefore: string, strAfter: string) => boolean;
+export declare const needFirstSpaceBeforeCurrentNode: (node: any, serialize: any) => boolean;