jmakeig

Given a type Thing create a type Pending<Thing> with the following behavior:

• Root-level properties of type ID are nullable
• Properites that are entities, i.e. that have top-level ID property, are replaced with { id_prop: ID; }, where id_prop is name name of the entity’s ID property.
• Same for Arrays of entities with ID properties, i.e. Array<{something: ID; …}> is mapped to Array<Ref<Entity>>
• Primitives are loosened to allow the original type along with string or null, for example for easy instantiation from FormData

jmakeig

Creates a resuable rules that can validate multiple inputs, returning a valid and cleaned-up value or an accumlation of errors.

[Playground](https://www.typescriptlang.org/play/?#code/C4TwDgpgBAsghiARhAPAFQHxQLxTVAHygFcA7Aa1IHsB3UgbgChRIoBJUgNzgBsBLACYoAajhIVqdLLgDeUPqTDFgALijD68gM5biELWq3AATgoDmAbQC6mgL7Nw0eEggdu-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-szatMufzo8LDWLxtN5crrbttadDc+k9Il9TvoUW4zgeDF1Dw4jUcayQEcAmn4j6UhIBSagygTMl42KctywDaLo+hiOyMyTghjwIbg1Y+nwYgAAz9qEApQGkXKkEY2YmmAUBjCOhqnoSwozAOZxiKWgJnB+Fx8OMaQ-IkTKCJxUxBkePGgmaFpWp8smYSCSFaNxn5AmI8

jmakeig

Validation

• Strongly typed unknown → Entity
• Accumulation of all validation issues, not just the first (or the last)
• Return the prepared entity, not just Boolean validation result. For example, parsing a string input as a number.

jmakeig

declare const IDBrand: unique symbol;
type ID = string & { [IDBrand]: void };

/**
 * Allows for each property’s original type or string.
 * This is useful for accepting values from HTML forms,
 * which only allow string inputs.
 */
type Stringish<T> = {
	[p in keyof T]: T[p] | string;

jmakeig

-- PostgreSQL syntax

DROP TABLE IF EXISTS revenue;
CREATE TABLE revenue (
  month TEXT,
  customer INT,
  channel TEXT,
  list NUMERIC
 );

jmakeig

/** @typedef {{name: string; title: string; description: string; sets: any[]; }} Workout */
/** @typedef {{name: string; instructions: string;}} Exercise */

/** @typedef {"en" | "fr" | "de" | "jp" | "zh" | "he"} Lang */
/** @typedef {string | {[L in Lang]?: string}} Message */
/** @typedef {{for: string, message?: Message}} ValidationResult */

/** 
 * @template Entity
 * @typedef {{(condition: {(entity: Entity): boolean}, id: string, message: Message): {(entity: Entity): ValidationResult[]}}} RuleCreator<Entity> 

jmakeig

svg {
  display: inline-block;
  height: 90px;
  width: 90px;
}
svg.timer {
  transform: rotate(-90deg);
  overflow: visible;
}
circle.gague {

jmakeig

="FY"&IF(MONTH(G2)=1, YEAR(G2), YEAR(G2)+1) & "Q"&IF(MONTH(G2)=1, 4, FLOOR((MONTH(G2)+1)/3,1))

jmakeig

#!/usr/bin/env bash

# Splits a file that contains a top-level JSON Array 
# into individual files, one per item, named sequentially
# https://stedolan.github.io/jq/download/
jq -c  .[] "$1" | awk '{print > (NR ".json")}'

jmakeig

#!/usr/bin/env node

/**
 * Depth-first copy with selective transformation.
 * For each of the `Iterable` selected by the selector function, it
 * applies the `visitor` function and continues recursively.
 *
 *
 * @param {object} node the tree structure
 * @param {function} [visitor] the function to apply to selected children