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doc-builders.js
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doc-builders.js
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"use strict";
const utils = require("./doc-utils");
const willBreak = utils.willBreak;
function assertDoc(val) {
if (
!(typeof val === "string" || (val != null && typeof val.type === "string"))
) {
throw new Error(
"Value " + JSON.stringify(val) + " is not a valid document"
);
}
}
function concat(parts) {
parts.forEach(assertDoc);
// We cannot do this until we change `printJSXElement` to not
// access the internals of a document directly.
// if(parts.length === 1) {
// // If it's a single document, no need to concat it.
// return parts[0];
// }
return { type: "concat", parts };
}
function indent(contents) {
assertDoc(contents);
return { type: "indent", contents };
}
function align(n, contents) {
assertDoc(contents);
return { type: "align", contents, n };
}
function group(contents, opts) {
opts = opts || {};
assertDoc(contents);
return {
type: "group",
contents: contents,
break: !!opts.shouldBreak,
expandedStates: opts.expandedStates
};
}
function conditionalGroup(states, opts) {
return group(
states[0],
Object.assign(opts || {}, { expandedStates: states })
);
}
function fill(parts) {
parts.forEach(assertDoc);
return { type: "fill", parts };
}
function ifBreak(breakContents, flatContents) {
if (breakContents) {
assertDoc(breakContents);
}
if (flatContents) {
assertDoc(flatContents);
}
return { type: "if-break", breakContents, flatContents };
}
function lineSuffix(contents) {
assertDoc(contents);
return { type: "line-suffix", contents };
}
const lineSuffixBoundary = { type: "line-suffix-boundary" };
const breakParent = { type: "break-parent" };
const line = { type: "line" };
const softline = { type: "line", soft: true };
const hardline = concat([{ type: "line", hard: true }, breakParent]);
const literalline = concat([
{ type: "line", hard: true, literal: true },
breakParent
]);
function join(sep, arr) {
var res = [];
for (var i = 0; i < arr.length; i++) {
if (i !== 0) {
res.push(sep);
}
res.push(arr[i]);
}
return concat(res);
}
module.exports = {
concat,
join,
line,
softline,
hardline,
literalline,
group,
conditionalGroup,
fill,
lineSuffix,
lineSuffixBoundary,
breakParent,
ifBreak,
indent,
align
};