From 31d339b46b9fc11e50a0cdbf53e937e575531efd Mon Sep 17 00:00:00 2001 From: IRONM00N <64110067+IRONM00N@users.noreply.github.com> Date: Sat, 28 May 2022 12:43:42 -0400 Subject: feat: custom stripIndent --- src/lib/common/tags.ts | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 src/lib/common/tags.ts (limited to 'src/lib/common') diff --git a/src/lib/common/tags.ts b/src/lib/common/tags.ts new file mode 100644 index 0000000..098cf29 --- /dev/null +++ b/src/lib/common/tags.ts @@ -0,0 +1,34 @@ +/* these functions are adapted from the common-tags npm package which is licensed under the MIT license */ +/* the js docs are adapted from the @types/common-tags npm package which is licensed under the MIT license */ + +/** + * Strips the **initial** indentation from the beginning of each line in a multiline string. + */ +export function stripIndent(strings: TemplateStringsArray, ...expressions: any[]) { + const str = format(strings, ...expressions); + // remove the shortest leading indentation from each line + const match = str.match(/^[^\S\n]*(?=\S)/gm); + const indent = match && Math.min(...match.map((el) => el.length)); + if (indent) { + const regexp = new RegExp(`^.{${indent}}`, 'gm'); + return str.replace(regexp, ''); + } + return str; +} + +/** + * Strips **all** of the indentation from the beginning of each line in a multiline string. + */ +export function stripIndents(strings: TemplateStringsArray, ...expressions: any[]) { + const str = format(strings, ...expressions); + // remove all indentation from each line + return str.replace(/^[^\S\n]+/gm, ''); +} + +function format(strings: TemplateStringsArray, ...expressions: any[]) { + const str = strings + .reduce((result, string, index) => ''.concat(result, expressions[index - 1], string)) + .replace(/[^\S\n]+$/gm, '') + .replace(/^\n/, ''); + return str; +} -- cgit