In NodeJs programs, printing structured arrays to the console can be annoying. tablify fulfills your greatest desires.

It can generate a pretty table out of

• an array of arrays
• an array of dictionaries; this is perhaps the most common thanks to (no)SQL
• a single dictionary, with each key/value pair getting a nice row
• data with or without headers

For example, here's how tablify handles an array of arrays:

tablify=require('tablify').tablifydata=[[1,2,3]["cat","dog",Math.PI]]console.logtablifydata

Output:

--------------------------------- | 1 | 2 | 3 | | cat | dog | 3.141592653589793 | --------------------------------- 

> npm install tablify 

If your structure has a header row, pass the optional "has_header" param:

data=[["name","age"]["Chris",10]["Max",8]]console.logtablifydata,{has_header: true}

Output:

--------------- | name | age | --------------- | Chris | 10 | | Max | 8 | --------------- 

Even with inconsistent keys, you can print an array of dictionaries. Column headers are calculated automatically using the union of all keys.

data=[{name: "Chris",age: 16,gender: "M"}{name: "Max",age: 12,gender: "M"}{name: "Sam",gender: "F",colors: ["Orange","Blue"]}]console.logtablifydata

Output:

------------------------------------------------- | # | age | colors | gender | name | ------------------------------------------------- | 0 | 16 | | M | Chris | | 1 | 12 | | M | Max | | 2 | | ["Orange","Blue"] | F | Sam | ------------------------------------------------- 

console.log tablify data,{keys: ["age","name"]} 

Output:

-------------------- | # | age | name | -------------------- | 0 | 16 | Chris | | 1 | 12 | Max | | 2 | | Sam | -------------------- 

If tablify is passed an object that's not an array, it will pivot to show keys in one column and values in another.

console.log tablify{"name": "Chris", "age": 25, "obj": [1,2,3,{"foo":"bar"}]} 

Output:

-------------------------------- | age | 25 | | name | Chris | | obj | [1,2,3,{"foo":"bar"}] | -------------------------------- 

Any subset of these can be passed as a second parameter to tablify, in a dictionary.

• show_index include a column showing the row number of each row. The default is false unless tablify is passed an array of dictionaries, in which case the default is true
• has_header include the first row as a header; this defaults to false unless passed an array of dicts, in which case the keys are used as a first row and this defaults to true; if passing a single dictionary, this is ignored
• keys which columns to use, when tablifying an array of dictionaries; by default all keys are used in alphabetical order
• row_start default = '| '
• row_end default = ' |'
• spacer default = ' | '
• row_sep_char default = '-'