refactor: use single source for constants

src/bin/index.ts

@@ -1,9 +1,9 @@
 import { formatMessage } from '../helpers/format-message';
 import { run } from '../utils/run';
 import { log } from '../tasks/stdio/log';
+import { constants } from '../constants';
 import main from './main';
 import { NullaryFn } from 'type-core';
-import { loadPackage } from 'cli-belt';
 import { attach, options as _options, resolver, add } from 'exits';
 
 export interface BinOptions {
@@ -22,16 +22,16 @@ export interface BinOptions {
  */
 export async function bin(options?: BinOptions): Promise<void> {
   try {
-    const pkg = await loadPackage(__dirname, { title: false });
     const opts = Object.assign(
       {
-        bin: 'kpo',
-        file: 'kpo.tasks.js',
-        description: pkg.description || '',
-        version: pkg.version || 'Unknown'
+        bin: constants.bin,
+        file: constants.file,
+        description: constants.description,
+        version: constants.version
       },
       options
     );
+
     const task = await main({ argv: process.argv.slice(2) }, opts);
 
     const cbs: NullaryFn[] = [];

src/constants.ts

@@ -0,0 +1,8 @@
+import pkg from '../package.json';
+
+export const constants = {
+  bin: 'kpo',
+  file: 'kpo.tasks.js',
+  description: pkg.description || '',
+  version: pkg.version || 'Unknown'
+};

src/tasks/reflection/lift.ts

@@ -3,6 +3,7 @@ import { parseToRecord } from '../../helpers/parse';
 import { getAbsolutePath } from '../../helpers/paths';
 import { isCancelled } from '../../utils/is-cancelled';
 import { run } from '../../utils/run';
+import { constants } from '../../constants';
 import { select } from '../transform/select';
 import { write } from '../filesystem/write';
 import { print } from '../stdio/print';
@@ -38,7 +39,7 @@ export interface LiftOptions {
 export function lift(tasks: Task.Record, options?: LiftOptions): Task.Async {
   return async (ctx: Context): Promise<void> => {
     const opts = Object.assign(
-      { purge: false, mode: 'default', bin: 'kpo' },
+      { purge: false, mode: 'default', bin: constants.bin },
       options
     );
 

src/tasks/reflection/list.ts

@@ -1,5 +1,6 @@
 import { Task, Context } from '../../definitions';
 import { parseToArray } from '../../helpers/parse';
+import { constants } from '../../constants';
 import { print } from '../stdio/print';
 import { Empty } from 'type-core';
 import { into } from 'pipettes';
@@ -24,7 +25,7 @@ export function list(
   map?: (name: string, route: string[]) => string[]
 ): Task.Sync {
   return (ctx: Context): void => {
-    const opts = Object.assign({ bin: 'kpo' }, options);
+    const opts = Object.assign({ bin: constants.bin }, options);
     const items = parseToArray(tasks);
     const maxRouteLength = items.reduce(
       (acc, item) => (acc > item.route.length ? acc : item.route.length),