lib: refine exports

Export selectively, only exposing what we actually want outside callers
to use.

We continue exposing some odd utilities for the time being (preSig,
deSig primarily) but plan to eventually remove those.

Author: Fang-

src/index.ts

@@ -1,7 +1,8 @@
-export * from './da';
-export * from './p';
-export * from './q';
-export * from './ud';
-export * from './uv';
-export * from './uw';
-export * from './ux';
+//  main
+export * from './types';
+export { parse, slaw, slav, nuck } from './parse';
+export { render, scot, rend } from './render';
+
+//  atom utils
+export { daToUnix, unixToDa } from './da';
+export { cite, deSig, preSig } from './p';  //TODO  remove deSig, preSig

src/parse.ts

@@ -43,11 +43,21 @@ export const regex: { [key in aura]: RegExp } = {
   'ux':  integerRegex('0x', '[1-9a-f]', '[0-9a-f]', 4),
 };
 
-//  parse(): slaw()
-//  slaw(): parse string as specific aura, null if that fails
+//  parse(): slav()
+//  slav(): slaw() but throwing on failure
 //
-export const parse = slaw;
+export const parse = slav;
 export default parse;
+export function slav(aura: aura, str: string): bigint {
+  const out = slaw(aura, str);
+  if (!out) {
+    throw new Error('slav: failed to parse @' + aura + ' from string: ' + str);
+  }
+  return out;
+}
+
+//  slaw(): parse string as specific aura, null if that fails
+//
 export function slaw(aura: aura, str: string): bigint | null {
   //  if the aura has a regex, test with that first
   //TODO  does double work with checks in nuck?
@@ -67,16 +77,6 @@ export function slaw(aura: aura, str: string): bigint | null {
   }
 }
 
-//  slav(): slaw() but throwing on failure
-//
-export function slav(aura: aura, str: string): bigint {
-  const out = slaw(aura, str);
-  if (!out) {
-    throw new Error('slav: failed to parse @' + aura + ' from string: ' + str);
-  }
-  return out;
-}
-
 //  nuck(): parse string into coin, or null if that fails
 //
 export function nuck(str: string): coin | null {
@@ -209,7 +209,7 @@ export function nuck(str: string): coin | null {
 
 //  bisk(): parse string into dime of integer aura, or null if that fails
 //
-export function bisk(str: string): dime | null {
+function bisk(str: string): dime | null {
   switch (str.slice(0, 2)) {
     case '0b':  //  "bay"
       if (regex['ub'].test(str)) {