93 lines
2.7 KiB
JavaScript
93 lines
2.7 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = void 0;
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const dedent = createDedent({});
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var _default = exports.default = dedent;
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function createDedent(options) {
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dedent.withOptions = newOptions => createDedent({
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...options,
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...newOptions
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});
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return dedent;
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function dedent(strings, ...values) {
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const raw = typeof strings === "string" ? [strings] : strings.raw;
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const {
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alignValues = false,
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escapeSpecialCharacters = Array.isArray(strings),
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trimWhitespace = true
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} = options;
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// first, perform interpolation
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let result = "";
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for (let i = 0; i < raw.length; i++) {
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let next = raw[i];
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if (escapeSpecialCharacters) {
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// handle escaped newlines, backticks, and interpolation characters
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next = next.replace(/\\\n[ \t]*/g, "").replace(/\\`/g, "`").replace(/\\\$/g, "$").replace(/\\\{/g, "{");
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}
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result += next;
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if (i < values.length) {
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const value = alignValues ? alignValue(values[i], result) : values[i];
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// eslint-disable-next-line @typescript-eslint/restrict-plus-operands
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result += value;
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}
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}
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// now strip indentation
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const lines = result.split("\n");
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let mindent = null;
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for (const l of lines) {
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const m = l.match(/^(\s+)\S+/);
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if (m) {
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const indent = m[1].length;
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if (!mindent) {
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// this is the first indented line
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mindent = indent;
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} else {
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mindent = Math.min(mindent, indent);
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}
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}
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}
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if (mindent !== null) {
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const m = mindent; // appease TypeScript
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result = lines
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// https://github.com/typescript-eslint/typescript-eslint/issues/7140
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// eslint-disable-next-line @typescript-eslint/prefer-string-starts-ends-with
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.map(l => l[0] === " " || l[0] === "\t" ? l.slice(m) : l).join("\n");
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}
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// dedent eats leading and trailing whitespace too
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if (trimWhitespace) {
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result = result.trim();
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}
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// handle escaped newlines at the end to ensure they don't get stripped too
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if (escapeSpecialCharacters) {
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result = result.replace(/\\n/g, "\n");
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}
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return result;
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}
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}
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/**
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* Adjusts the indentation of a multi-line interpolated value to match the current line.
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*/
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function alignValue(value, precedingText) {
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if (typeof value !== "string" || !value.includes("\n")) {
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return value;
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}
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const currentLine = precedingText.slice(precedingText.lastIndexOf("\n") + 1);
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const indentMatch = currentLine.match(/^(\s+)/);
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if (indentMatch) {
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const indent = indentMatch[1];
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return value.replace(/\n/g, `\n${indent}`);
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}
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return value;
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}
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module.exports = exports.default;
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module.exports.default = exports.default;
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